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1202214221 = 13148762191
BaseRepresentation
bin100011110101000…
…0101010101001101
310002210011210212122
41013222011111031
54430231323341
6315143342325
741535436505
oct10752052515
93083153778
101202214221
1156768937a
122967519a5
131620bb280
14b5948a05
157082694b
hex47a8554d

1202214221 has 8 divisors (see below), whose sum is σ = 1295583744. Its totient is φ = 1108972080.

The previous prime is 1202214199. The next prime is 1202214239. The reversal of 1202214221 is 1224122021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1202214221 - 26 = 1202214157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202214221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202214271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11765 + ... + 50426.

It is an arithmetic number, because the mean of its divisors is an integer number (161947968).

Almost surely, 21202214221 is an apocalyptic number.

It is an amenable number.

1202214221 is a deficient number, since it is larger than the sum of its proper divisors (93369523).

1202214221 is a wasteful number, since it uses less digits than its factorization.

1202214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63691.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1202214221 is about 34672.9609494199. The cubic root of 1202214221 is about 1063.3117678454.

Adding to 1202214221 its reverse (1224122021), we get a palindrome (2426336242).

The spelling of 1202214221 in words is "one billion, two hundred two million, two hundred fourteen thousand, two hundred twenty-one".

Divisors: 1 13 1487 19331 62191 808483 92478017 1202214221