21102010222101 has 16 divisors (see below), whose sum is σ = 28184806742400. Its totient is φ = 14043630706688.

The previous prime is 21102010222093. The next prime is 21102010222103. The reversal of 21102010222101 is 10122201020112.

It is a cyclic number.

It is not a de Polignac number, because 21102010222101 - 2³ = 21102010222093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102010222103) 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, 1574920 + ... + 6684638.

It is an arithmetic number, because the mean of its divisors is an integer number (1761550421400).

Almost surely, 2^{21102010222101} is an apocalyptic number.

It is an amenable number.

21102010222101 is a deficient number, since it is larger than the sum of its proper divisors (7082796520299).

21102010222101 is a wasteful number, since it uses less digits than its factorization.

21102010222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112108.

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

Adding to 21102010222101 its reverse (10122201020112), we get a palindrome (31224211242213).

The spelling of 21102010222101 in words is "twenty-one trillion, one hundred two billion, ten million, two hundred twenty-two thousand, one hundred one".