2221312123031 has 8 divisors (see below), whose sum is σ = 2231112620880. Its totient is φ = 2211512499072.

The previous prime is 2221312123021. The next prime is 2221312123097. The reversal of 2221312123031 is 1303212131222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221312123031 - 2²² = 2221307928727 is a prime.

It is a super-2 number, since 2×2221312123031² (a number of 25 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 = 2221312122988 and 2221312123006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221312123001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5168696 + ... + 5581938.

It is an arithmetic number, because the mean of its divisors is an integer number (278889077610).

Almost surely, 2^{2221312123031} is an apocalyptic number.

2221312123031 is a deficient number, since it is larger than the sum of its proper divisors (9800497849).

2221312123031 is a wasteful number, since it uses less digits than its factorization.

2221312123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436945.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2221312123031 its reverse (1303212131222), we get a palindrome (3524524254253).

The spelling of 2221312123031 in words is "two trillion, two hundred twenty-one billion, three hundred twelve million, one hundred twenty-three thousand, thirty-one".