21022010101012 has 12 divisors (see below), whose sum is σ = 36827120535156. Its totient is φ = 10499975662400.

The previous prime is 21022010101009. The next prime is 21022010101021. The reversal of 21022010101012 is 21010101022012.

It can be written as a sum of positive squares in 2 ways, for example, as 14284060889476 + 6737949211536 = 3779426^2 + 2595756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21022010100983 and 21022010101001.

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, 2757342739 + ... + 2757350362.

It is an arithmetic number, because the mean of its divisors is an integer number (3068926711263).

Almost surely, 2^{21022010101012} is an apocalyptic number.

It is an amenable number.

21022010101012 is a deficient number, since it is larger than the sum of its proper divisors (15805110434144).

21022010101012 is a wasteful number, since it uses less digits than its factorization.

21022010101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514694058 (or 5514694056 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21022010101012 its reverse (21010101022012), we get a palindrome (42032111123024).

The spelling of 21022010101012 in words is "twenty-one trillion, twenty-two billion, ten million, one hundred one thousand, twelve".