102201231213 has 6 divisors (see below), whose sum is σ = 147624000654. Its totient is φ = 68134154136.

The previous prime is 102201231157. The next prime is 102201231257. The reversal of 102201231213 is 312132102201.

102201231213 is a `hidden beast` number, since 1 + 0 + 220 + 1 + 231 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86208593769 + 15992637444 = 293613^2 + 126462^2 .

It is not a de Polignac number, because 102201231213 - 2⁶ = 102201231149 is a prime.

It is a super-2 number, since 2×102201231213² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201241213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5677846170 + ... + 5677846187.

It is an arithmetic number, because the mean of its divisors is an integer number (24604000109).

Almost surely, 2^102201231213 is an apocalyptic number.

It is an amenable number.

102201231213 is a deficient number, since it is larger than the sum of its proper divisors (45422769441).

102201231213 is a wasteful number, since it uses less digits than its factorization.

102201231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11355692363 (or 11355692360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102201231213 its reverse (312132102201), we get a palindrome (414333333414).

The spelling of 102201231213 in words is "one hundred two billion, two hundred one million, two hundred thirty-one thousand, two hundred thirteen".