102120221102021 has 16 divisors (see below), whose sum is σ = 104022862348800. Its totient is φ = 100223318790000.

The previous prime is 102120221102017. The next prime is 102120221102087. The reversal of 102120221102021 is 120201122021201.

It is a cyclic number.

It is not a de Polignac number, because 102120221102021 - 2² = 102120221102017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120221002021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572233096 + ... + 1572298046.

It is an arithmetic number, because the mean of its divisors is an integer number (6501428896800).

Almost surely, 2^{102120221102021} is an apocalyptic number.

It is an amenable number.

102120221102021 is a deficient number, since it is larger than the sum of its proper divisors (1902641246779).

102120221102021 is an equidigital number, since it uses as much as digits as its factorization.

102120221102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108680.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102120221102021 its reverse (120201122021201), we get a palindrome (222321343123222).

The spelling of 102120221102021 in words is "one hundred two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred two thousand, twenty-one".