1012111111210 has 32 divisors (see below), whose sum is σ = 1853942329872. Its totient is φ = 397744865280.

The previous prime is 1012111111171. The next prime is 1012111111211. The reversal of 1012111111210 is 121111112101.

It can be written as a sum of positive squares in 8 ways, for example, as 658073021089 + 354038090121 = 811217^2 + 595011^2 .

It is not an unprimeable number, because it can be changed into a prime (1012111111211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509771 + ... + 2884990.

Almost surely, 2^{1012111111210} is an apocalyptic number.

1012111111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012111111210 is a deficient number, since it is larger than the sum of its proper divisors (841831218662).

1012111111210 is a wasteful number, since it uses less digits than its factorization.

1012111111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395098.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1012111111210 its reverse (121111112101), we get a palindrome (1133222223311).

The spelling of 1012111111210 in words is "one trillion, twelve billion, one hundred eleven million, one hundred eleven thousand, two hundred ten".