Search a number
-
+
12210201021 = 3193741141209
BaseRepresentation
bin10110101111100100…
…01110000110111101
31011111221122110221110
423113302032012331
5200001302413041
65335334552233
7611402665464
oct132762160675
934457573843
1012210201021
1151a6381827
122449208679
1311c7881025
1483b8d79db
154b6e42516
hex2d7c8e1bd

12210201021 has 32 divisors (see below), whose sum is σ = 18029692800. Its totient is φ = 7320222720.

The previous prime is 12210201019. The next prime is 12210201049. The reversal of 12210201021 is 12010201221.

Adding to 12210201021 its reverse (12010201221), we get a palindrome (24220402242).

It is not a de Polignac number, because 12210201021 - 21 = 12210201019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12210200988 and 12210201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210201001) 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, 15865 + ... + 157073.

It is an arithmetic number, because the mean of its divisors is an integer number (563427900).

Almost surely, 212210201021 is an apocalyptic number.

It is an amenable number.

12210201021 is a deficient number, since it is larger than the sum of its proper divisors (5819491779).

12210201021 is a wasteful number, since it uses less digits than its factorization.

12210201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141309.

The product of its (nonzero) digits is 16, while the sum is 12.

The spelling of 12210201021 in words is "twelve billion, two hundred ten million, two hundred one thousand, twenty-one".

Divisors: 1 3 19 37 41 57 111 123 703 779 1517 2109 2337 4551 28823 86469 141209 423627 2682971 5224733 5789569 8048913 15674199 17368707 99269927 110001811 214214053 297809781 330005433 642642159 4070067007 12210201021