1031201232111 has 6 divisors (see below), whose sum is σ = 1489512890840. Its totient is φ = 687467488068.

The previous prime is 1031201232079. The next prime is 1031201232181. The reversal of 1031201232111 is 1112321021301.

1031201232111 is a `hidden beast` number, since 10 + 312 + 0 + 1 + 232 + 111 = 666.

It is not a de Polignac number, because 1031201232111 - 2⁵ = 1031201232079 is a prime.

It is a super-2 number, since 2×1031201232111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031201232181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57288957331 + ... + 57288957348.

Almost surely, 2^{1031201232111} is an apocalyptic number.

1031201232111 is a deficient number, since it is larger than the sum of its proper divisors (458311658729).

1031201232111 is a wasteful number, since it uses less digits than its factorization.

1031201232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114577914685 (or 114577914682 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1031201232111 its reverse (1112321021301), we get a palindrome (2143522253412).

The spelling of 1031201232111 in words is "one trillion, thirty-one billion, two hundred one million, two hundred thirty-two thousand, one hundred eleven".