1011222313231 has 16 divisors (see below), whose sum is σ = 1145028900960. Its totient is φ = 886473947520.

The previous prime is 1011222313217. The next prime is 1011222313253. The reversal of 1011222313231 is 1323132221101.

It is a cyclic number.

It is not a de Polignac number, because 1011222313231 - 2⁷ = 1011222313103 is a prime.

It is a super-2 number, since 2×1011222313231² (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 (1011222313331) 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, 21962965 + ... + 22008958.

It is an arithmetic number, because the mean of its divisors is an integer number (71564306310).

Almost surely, 2^{1011222313231} is an apocalyptic number.

1011222313231 is a deficient number, since it is larger than the sum of its proper divisors (133806587729).

1011222313231 is a wasteful number, since it uses less digits than its factorization.

1011222313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972026.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1011222313231 its reverse (1323132221101), we get a palindrome (2334354534332).

The spelling of 1011222313231 in words is "one trillion, eleven billion, two hundred twenty-two million, three hundred thirteen thousand, two hundred thirty-one".