102121222113 has 6 divisors (see below), whose sum is σ = 147508431954. Its totient is φ = 68080814736.

The previous prime is 102121222111. The next prime is 102121222117. The reversal of 102121222113 is 311222121201.

It can be written as a sum of positive squares in only one way, i.e., 91453017744 + 10668204369 = 302412^2 + 103287^2 .

It is not a de Polignac number, because 102121222113 - 2¹ = 102121222111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102121222111) 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, 5673401220 + ... + 5673401237.

It is an arithmetic number, because the mean of its divisors is an integer number (24584738659).

Almost surely, 2^102121222113 is an apocalyptic number.

It is an amenable number.

102121222113 is a deficient number, since it is larger than the sum of its proper divisors (45387209841).

102121222113 is a wasteful number, since it uses less digits than its factorization.

102121222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11346802463 (or 11346802460 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 102121222113 its reverse (311222121201), we get a palindrome (413343343314).

The spelling of 102121222113 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred thirteen".