1011213033231 has 16 divisors (see below), whose sum is σ = 1411581144960. Its totient is φ = 643053623520.

The previous prime is 1011213033211. The next prime is 1011213033241. The reversal of 1011213033231 is 1323303121101.

It is a happy number.

It is not a de Polignac number, because 1011213033231 - 2²⁷ = 1011078815503 is a prime.

It is a super-2 number, since 2×1011213033231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011213033198 and 1011213033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011213033211) 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, 70011685 + ... + 70026126.

It is an arithmetic number, because the mean of its divisors is an integer number (88223821560).

Almost surely, 2^{1011213033231} is an apocalyptic number.

1011213033231 is a deficient number, since it is larger than the sum of its proper divisors (400368111729).

1011213033231 is a wasteful number, since it uses less digits than its factorization.

1011213033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140037926.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1011213033231 its reverse (1323303121101), we get a palindrome (2334516154332).

The spelling of 1011213033231 in words is "one trillion, eleven billion, two hundred thirteen million, thirty-three thousand, two hundred thirty-one".