102001212102021 has 4 divisors (see below), whose sum is σ = 136001616136032. Its totient is φ = 68000808068012.

The previous prime is 102001212101993. The next prime is 102001212102037. The reversal of 102001212102021 is 120201212100201.

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 102001212102021 - 2¹⁴ = 102001212085637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001212102421) 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, 17000202017001 + ... + 17000202017006.

It is an arithmetic number, because the mean of its divisors is an integer number (34000404034008).

Almost surely, 2^{102001212102021} is an apocalyptic number.

It is an amenable number.

102001212102021 is a deficient number, since it is larger than the sum of its proper divisors (34000404034011).

102001212102021 is an equidigital number, since it uses as much as digits as its factorization.

102001212102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34000404034010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102001212102021 its reverse (120201212100201), we get a palindrome (222202424202222).

The spelling of 102001212102021 in words is "one hundred two trillion, one billion, two hundred twelve million, one hundred two thousand, twenty-one".