1231130021110 has 16 divisors (see below), whose sum is σ = 2417491678032. Its totient is φ = 447683644000.

The previous prime is 1231130021071. The next prime is 1231130021159. The reversal of 1231130021110 is 111200311321.

It is a happy number.

It is a super-2 number, since 2×1231130021110² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 5596045441 + ... + 5596045660.

It is an arithmetic number, because the mean of its divisors is an integer number (151093229877).

Almost surely, 2^{1231130021110} is an apocalyptic number.

1231130021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231130021110 is a deficient number, since it is larger than the sum of its proper divisors (1186361656922).

1231130021110 is a wasteful number, since it uses less digits than its factorization.

1231130021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192091119.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1231130021110 its reverse (111200311321), we get a palindrome (1342330332431).

The spelling of 1231130021110 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, twenty-one thousand, one hundred ten".