231111132120022 has 16 divisors (see below), whose sum is σ = 432207831497472. Its totient is φ = 90043298228520.

The previous prime is 231111132120017. The next prime is 231111132120047. The reversal of 231111132120022 is 220021231111132.

It is a happy number.

It is a super-4 number, since 4×231111132120022⁴ (a number of 59 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 231111132119975 and 231111132120002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750360818418 + ... + 750360818725.

It is an arithmetic number, because the mean of its divisors is an integer number (27012989468592).

Almost surely, 2^{231111132120022} is an apocalyptic number.

231111132120022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231111132120022 is a deficient number, since it is larger than the sum of its proper divisors (201096699377450).

231111132120022 is a wasteful number, since it uses less digits than its factorization.

231111132120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500721637163.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 231111132120022 its reverse (220021231111132), we get a palindrome (451132363231154).

The spelling of 231111132120022 in words is "two hundred thirty-one trillion, one hundred eleven billion, one hundred thirty-two million, one hundred twenty thousand, twenty-two".