102010022100221 has 4 divisors (see below), whose sum is σ = 103446782974944. Its totient is φ = 100573261225500.

The previous prime is 102010022100211. The next prime is 102010022100257. The reversal of 102010022100221 is 122001220010201.

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 102010022100221 - 2⁴⁶ = 31641277922557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102010022100196 and 102010022100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010022100211) 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, 718380437255 + ... + 718380437396.

It is an arithmetic number, because the mean of its divisors is an integer number (25861695743736).

Almost surely, 2^{102010022100221} is an apocalyptic number.

It is an amenable number.

102010022100221 is a deficient number, since it is larger than the sum of its proper divisors (1436760874723).

102010022100221 is an equidigital number, since it uses as much as digits as its factorization.

102010022100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436760874722.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102010022100221 its reverse (122001220010201), we get a palindrome (224011242110422).

The spelling of 102010022100221 in words is "one hundred two trillion, ten billion, twenty-two million, one hundred thousand, two hundred twenty-one".