102121100110100 has 36 divisors (see below), whose sum is σ = 221604736680768. Its totient is φ = 40848080700000.

The previous prime is 102121100109983. The next prime is 102121100110109. The reversal of 102121100110100 is 1011001121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121100110109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7080875 + ... + 15949325.

Almost surely, 2^{102121100110100} is an apocalyptic number.

102121100110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121100110100 is an abundant number, since it is smaller than the sum of its proper divisors (119483636570668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102121100110100 is a wasteful number, since it uses less digits than its factorization.

102121100110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8983616 (or 8983609 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 102121100110100 its reverse (1011001121201), we get a palindrome (103132101231301).

The spelling of 102121100110100 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred million, one hundred ten thousand, one hundred".