21102022020010 has 16 divisors (see below), whose sum is σ = 37983854320776. Its totient is φ = 8440761100288.

The previous prime is 21102022019959. The next prime is 21102022020109. The reversal of 21102022020010 is 1002022020112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15128529190681 + 5973492829329 = 3889541^2 + 2444073^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4077319 + ... + 7669978.

Almost surely, 2^{21102022020010} is an apocalyptic number.

21102022020010 is a deficient number, since it is larger than the sum of its proper divisors (16881832300766).

21102022020010 is a wasteful number, since it uses less digits than its factorization.

21102022020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926937.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21102022020010 its reverse (1002022020112), we get a palindrome (22104044040122).

The spelling of 21102022020010 in words is "twenty-one trillion, one hundred two billion, twenty-two million, twenty thousand, ten".