102001012112021 has 8 divisors (see below), whose sum is σ = 111515206305888. Its totient is φ = 92527047070000.

The previous prime is 102001012112003. The next prime is 102001012112057. The reversal of 102001012112021 is 120211210100201.

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-102001012112021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102001012111987 and 102001012112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001012112081) 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, 10057282655 + ... + 10057292796.

It is an arithmetic number, because the mean of its divisors is an integer number (13939400788236).

Almost surely, 2^{102001012112021} is an apocalyptic number.

102001012112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102001012112021 is a deficient number, since it is larger than the sum of its proper divisors (9514194193867).

102001012112021 is a wasteful number, since it uses less digits than its factorization.

102001012112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20114575923.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102001012112021 its reverse (120211210100201), we get a palindrome (222212222212222).

The spelling of 102001012112021 in words is "one hundred two trillion, one billion, twelve million, one hundred twelve thousand, twenty-one".