21100122011010 has 64 divisors (see below), whose sum is σ = 58168400285952. Its totient is φ = 4798403371776.

The previous prime is 21100122010991. The next prime is 21100122011011. The reversal of 21100122011010 is 1011022100112.

It is a super-2 number, since 2×21100122011010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21100122011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254975817 + ... + 255058556.

It is an arithmetic number, because the mean of its divisors is an integer number (908881254468).

Almost surely, 2^{21100122011010} is an apocalyptic number.

21100122011010 is an abundant number, since it is smaller than the sum of its proper divisors (37068278274942).

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

21100122011010 is a wasteful number, since it uses less digits than its factorization.

21100122011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510034587.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21100122011010 its reverse (1011022100112), we get a palindrome (22111144111122).

The spelling of 21100122011010 in words is "twenty-one trillion, one hundred billion, one hundred twenty-two million, eleven thousand, ten".