21122001022010 has 128 divisors (see below), whose sum is σ = 44705650429440. Its totient is φ = 7035484345344.

The previous prime is 21122001022009. The next prime is 21122001022039. The reversal of 21122001022010 is 1022010022112.

It is a super-2 number, since 2×21122001022010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 661970477 + ... + 662002383.

It is an arithmetic number, because the mean of its divisors is an integer number (349262893980).

Almost surely, 2^{21122001022010} is an apocalyptic number.

21122001022010 is an abundant number, since it is smaller than the sum of its proper divisors (23583649407430).

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

21122001022010 is a wasteful number, since it uses less digits than its factorization.

21122001022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33720.

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

Adding to 21122001022010 its reverse (1022010022112), we get a palindrome (22144011044122).

The spelling of 21122001022010 in words is "twenty-one trillion, one hundred twenty-two billion, one million, twenty-two thousand, ten".