Search a number
-
+
1201020220221 = 359139467910433
BaseRepresentation
bin10001011110100010011…
…000100011001100111101
311020211001011102200000120
4101132202120203030331
5124134142134021341
62315424023245153
7152525254301013
oct21364230431475
94224034380016
101201020220221
114233936706a8
121749232a97b9
1389342a84603
14421b5c1a8b3
1521394563066
hex117a262333d

1201020220221 has 32 divisors (see below), whose sum is σ = 1640725632000. Its totient is φ = 781204743168.

The previous prime is 1201020220193. The next prime is 1201020220319. The reversal of 1201020220221 is 1220220201021.

It is not a de Polignac number, because 1201020220221 - 210 = 1201020219197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201020220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201020220721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115112221 + ... + 115122653.

It is an arithmetic number, because the mean of its divisors is an integer number (51272676000).

Almost surely, 21201020220221 is an apocalyptic number.

It is an amenable number.

1201020220221 is a deficient number, since it is larger than the sum of its proper divisors (439705411779).

1201020220221 is a wasteful number, since it uses less digits than its factorization.

1201020220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1201020220221 its reverse (1220220201021), we get a palindrome (2421240421242).

It can be divided in two parts, 1201020 and 220221, that added together give a palindrome (1421241).

The spelling of 1201020220221 in words is "one trillion, two hundred one billion, twenty million, two hundred twenty thousand, two hundred twenty-one".

Divisors: 1 3 59 139 177 417 4679 8201 10433 14037 24603 31299 276061 615547 650381 828183 1450187 1846641 1951143 4350561 38372479 48816007 85561033 115117437 146448021 256683099 2880144413 6785424973 8640433239 20356274919 400340073407 1201020220221