21022110101012 has 12 divisors (see below), whose sum is σ = 36949341991380. Its totient is φ = 10465155246336.

The previous prime is 21022110100969. The next prime is 21022110101021. The reversal of 21022110101012 is 21010101122012.

It can be written as a sum of positive squares in 2 ways, for example, as 19755571436176 + 1266538664836 = 4444724^2 + 1125406^2 .

It is a super-2 number, since 2×21022110101012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11474950013 + ... + 11474951844.

It is an arithmetic number, because the mean of its divisors is an integer number (3079111832615).

Almost surely, 2^{21022110101012} is an apocalyptic number.

It is an amenable number.

21022110101012 is a deficient number, since it is larger than the sum of its proper divisors (15927231890368).

21022110101012 is a wasteful number, since it uses less digits than its factorization.

21022110101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22949902090 (or 22949902088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21022110101012 its reverse (21010101122012), we get a palindrome (42032211223024).

The spelling of 21022110101012 in words is "twenty-one trillion, twenty-two billion, one hundred ten million, one hundred one thousand, twelve".