1213110031101 has 16 divisors (see below), whose sum is σ = 1618286249664. Its totient is φ = 808337026944.

The previous prime is 1213110031079. The next prime is 1213110031123. The reversal of 1213110031101 is 1011300113121.

It is an interprime number because it is at equal distance from previous prime (1213110031079) and next prime (1213110031123).

It is not a de Polignac number, because 1213110031101 - 2⁵ = 1213110031069 is a prime.

It is a super-3 number, since 3×1213110031101³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213110731101) 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, 70288065 + ... + 70305321.

It is an arithmetic number, because the mean of its divisors is an integer number (101142890604).

Almost surely, 2^{1213110031101} is an apocalyptic number.

It is an amenable number.

1213110031101 is a deficient number, since it is larger than the sum of its proper divisors (405176218563).

1213110031101 is a wasteful number, since it uses less digits than its factorization.

1213110031101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1213110031101 its reverse (1011300113121), we get a palindrome (2224410144222).

The spelling of 1213110031101 in words is "one trillion, two hundred thirteen billion, one hundred ten million, thirty-one thousand, one hundred one".