102112200121 has 8 divisors (see below), whose sum is σ = 105679366920. Its totient is φ = 98548103808.

The previous prime is 102112200107. The next prime is 102112200131. The reversal of 102112200121 is 121002211201.

It can be written as a sum of positive squares in 4 ways, for example, as 4040509225 + 98071690896 = 63565^2 + 313164^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102112200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102112200131) 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, 699846 + ... + 833071.

It is an arithmetic number, because the mean of its divisors is an integer number (13209920865).

Almost surely, 2^102112200121 is an apocalyptic number.

It is an amenable number.

102112200121 is a deficient number, since it is larger than the sum of its proper divisors (3567166799).

102112200121 is a wasteful number, since it uses less digits than its factorization.

102112200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535243.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102112200121 its reverse (121002211201), we get a palindrome (223114411322).

The spelling of 102112200121 in words is "one hundred two billion, one hundred twelve million, two hundred thousand, one hundred twenty-one".