102121101221012 has 96 divisors (see below), whose sum is σ = 190110378931200. Its totient is φ = 47832623511552.

The previous prime is 102121101221011. The next prime is 102121101221107. The reversal of 102121101221012 is 210122101121201.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121101221011) 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, 46866038939 + ... + 46866041117.

It is an arithmetic number, because the mean of its divisors is an integer number (1980316447200).

Almost surely, 2^{102121101221012} is an apocalyptic number.

It is an amenable number.

102121101221012 is a deficient number, since it is larger than the sum of its proper divisors (87989277710188).

102121101221012 is a wasteful number, since it uses less digits than its factorization.

102121101221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505 (or 5503 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102121101221012 its reverse (210122101121201), we get a palindrome (312243202342213).

The spelling of 102121101221012 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-one thousand, twelve".