231111113001222 has 16 divisors (see below), whose sum is σ = 486549711581760. Its totient is φ = 72982456737192.

The previous prime is 231111113001217. The next prime is 231111113001233. The reversal of 231111113001222 is 222100311111132.

231111113001222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013645232348 + ... + 1013645232575.

It is an arithmetic number, because the mean of its divisors is an integer number (30409356973860).

Almost surely, 2^{231111113001222} is an apocalyptic number.

231111113001222 is an abundant number, since it is smaller than the sum of its proper divisors (255438598580538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231111113001222 is a wasteful number, since it uses less digits than its factorization.

231111113001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027290464947.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 231111113001222 its reverse (222100311111132), we get a palindrome (453211424112354).

The spelling of 231111113001222 in words is "two hundred thirty-one trillion, one hundred eleven billion, one hundred thirteen million, one thousand, two hundred twenty-two".