1231000120110 has 32 divisors (see below), whose sum is σ = 3023107274880. Its totient is φ = 320632589088.

The previous prime is 1231000120043. The next prime is 1231000120111. The reversal of 1231000120110 is 110210001321.

It is a super-2 number, since 2×1231000120110² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231000120111) 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, 477130540 + ... + 477133119.

It is an arithmetic number, because the mean of its divisors is an integer number (94472102340).

Almost surely, 2^{1231000120110} is an apocalyptic number.

1231000120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231000120110 is an abundant number, since it is smaller than the sum of its proper divisors (1792107154770).

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

1231000120110 is a wasteful number, since it uses less digits than its factorization.

1231000120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954263712.

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

Adding to 1231000120110 its reverse (110210001321), we get a palindrome (1341210121431).

The spelling of 1231000120110 in words is "one trillion, two hundred thirty-one billion, one hundred twenty thousand, one hundred ten".