21001012022210 has 64 divisors (see below), whose sum is σ = 42539978231424. Its totient is φ = 7399426636800.

The previous prime is 21001012022153. The next prime is 21001012022233. The reversal of 21001012022210 is 1222021010012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22907207 + ... + 23806346.

It is an arithmetic number, because the mean of its divisors is an integer number (664687159866).

Almost surely, 2^{21001012022210} is an apocalyptic number.

21001012022210 is an abundant number, since it is smaller than the sum of its proper divisors (21538966209214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21001012022210 is a wasteful number, since it uses less digits than its factorization.

21001012022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46713699.

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

Adding to 21001012022210 its reverse (1222021010012), we get a palindrome (22223033032222).

The spelling of 21001012022210 in words is "twenty-one trillion, one billion, twelve million, twenty-two thousand, two hundred ten".