102120021020001 has 32 divisors (see below), whose sum is σ = 139164623896320. Its totient is φ = 66598320144384.

The previous prime is 102120021019997. The next prime is 102120021020023. The reversal of 102120021020001 is 100020120021201.

102120021020001 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 102120021020001 - 2² = 102120021019997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102120021020701) 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, 4119636 + ... + 14873178.

It is an arithmetic number, because the mean of its divisors is an integer number (4348894496760).

Almost surely, 2^{102120021020001} is an apocalyptic number.

It is an amenable number.

102120021020001 is a deficient number, since it is larger than the sum of its proper divisors (37044602876319).

102120021020001 is a wasteful number, since it uses less digits than its factorization.

102120021020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10754025.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102120021020001 its reverse (100020120021201), we get a palindrome (202140141041202).

The spelling of 102120021020001 in words is "one hundred two trillion, one hundred twenty billion, twenty-one million, twenty thousand, one".