102121010002001 has 4 divisors (see below), whose sum is σ = 102145682876400. Its totient is φ = 102096337127604.

The previous prime is 102121010001979. The next prime is 102121010002003. The reversal of 102121010002001 is 100200010121201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102121010002001 - 2³⁴ = 102103830132817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121010002003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12336430991 + ... + 12336439268.

It is an arithmetic number, because the mean of its divisors is an integer number (25536420719100).

Almost surely, 2^{102121010002001} is an apocalyptic number.

It is an amenable number.

102121010002001 is a deficient number, since it is larger than the sum of its proper divisors (24672874399).

102121010002001 is an equidigital number, since it uses as much as digits as its factorization.

102121010002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24672874398.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102121010002001 its reverse (100200010121201), we get a palindrome (202321020123202).

The spelling of 102121010002001 in words is "one hundred two trillion, one hundred twenty-one billion, ten million, two thousand, one".