12211020121010 has 64 divisors (see below), whose sum is σ = 22231191896928. Its totient is φ = 4828861661184.

The previous prime is 12211020121007. The next prime is 12211020121049. The reversal of 12211020121010 is 1012102011221.

It can be written as a sum of positive squares in 16 ways, for example, as 2307455178961 + 9903564942049 = 1519031^2 + 3146993^2 .

It is a super-2 number, since 2×12211020121010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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, 902040962 + ... + 902054498.

Almost surely, 2^{12211020121010} is an apocalyptic number.

12211020121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211020121010 is a deficient number, since it is larger than the sum of its proper divisors (10020171775918).

12211020121010 is a wasteful number, since it uses less digits than its factorization.

12211020121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16335.

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

Adding to 12211020121010 its reverse (1012102011221), we get a palindrome (13223122132231).

The spelling of 12211020121010 in words is "twelve trillion, two hundred eleven billion, twenty million, one hundred twenty-one thousand, ten".