231122213001 has 16 divisors (see below), whose sum is σ = 342415238400. Its totient is φ = 154076093424.

The previous prime is 231122212973. The next prime is 231122213009. The reversal of 231122213001 is 100312221132.

231122213001 is a `hidden beast` number, since 2 + 311 + 222 + 130 + 0 + 1 = 666.

It is not a de Polignac number, because 231122213001 - 2⁷ = 231122212873 is a prime.

It is a super-2 number, since 2×231122213001² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231122213009) 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, 732400 + ... + 999326.

It is an arithmetic number, because the mean of its divisors is an integer number (21400952400).

Almost surely, 2^231122213001 is an apocalyptic number.

It is an amenable number.

231122213001 is a deficient number, since it is larger than the sum of its proper divisors (111293025399).

231122213001 is a wasteful number, since it uses less digits than its factorization.

231122213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299005 (or 298999 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231122213001 its reverse (100312221132), we get a palindrome (331434434133).

The spelling of 231122213001 in words is "two hundred thirty-one billion, one hundred twenty-two million, two hundred thirteen thousand, one".