222001223312131 has 4 divisors (see below), whose sum is σ = 222001297830000. Its totient is φ = 222001148794264.

The previous prime is 222001223312117. The next prime is 222001223312189. The reversal of 222001223312131 is 131213322100222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222001223312131 is a prime.

It is a super-2 number, since 2×222001223312131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222001223312096 and 222001223312105.

It is not an unprimeable number, because it can be changed into a prime (222001223312111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32595631 + ... + 38813368.

It is an arithmetic number, because the mean of its divisors is an integer number (55500324457500).

Almost surely, 2^{222001223312131} is an apocalyptic number.

222001223312131 is a deficient number, since it is larger than the sum of its proper divisors (74517869).

222001223312131 is an equidigital number, since it uses as much as digits as its factorization.

222001223312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74517868.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 222001223312131 its reverse (131213322100222), we get a palindrome (353214545412353).

The spelling of 222001223312131 in words is "two hundred twenty-two trillion, one billion, two hundred twenty-three million, three hundred twelve thousand, one hundred thirty-one".