2123212222031 has 8 divisors (see below), whose sum is σ = 2134903299984. Its totient is φ = 2111543183680.

The previous prime is 2123212221973. The next prime is 2123212222067. The reversal of 2123212222031 is 1302222123212.

It is a happy number.

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 2123212222031 - 2⁶ = 2123212221967 is a prime.

It is a super-2 number, since 2×2123212222031² (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 = 2123212221988 and 2123212222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123212222231) 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, 5316680 + ... + 5702061.

It is an arithmetic number, because the mean of its divisors is an integer number (266862912498).

Almost surely, 2^{2123212222031} is an apocalyptic number.

2123212222031 is a deficient number, since it is larger than the sum of its proper divisors (11691077953).

2123212222031 is a wasteful number, since it uses less digits than its factorization.

2123212222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019801.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2123212222031 its reverse (1302222123212), we get a palindrome (3425434345243).

The spelling of 2123212222031 in words is "two trillion, one hundred twenty-three billion, two hundred twelve million, two hundred twenty-two thousand, thirty-one".