2123222031012 has 48 divisors (see below), whose sum is σ = 5215046558400. Its totient is φ = 670476349440.

The previous prime is 2123222030999. The next prime is 2123222031019. The reversal of 2123222031012 is 2101302223212.

It is a self number, because there is not a number n which added to its sum of digits gives 2123222031012.

It is not an unprimeable number, because it can be changed into a prime (2123222031019) 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, 15245212 + ... + 15383852.

It is an arithmetic number, because the mean of its divisors is an integer number (108646803300).

Almost surely, 2^{2123222031012} is an apocalyptic number.

It is an amenable number.

2123222031012 is an abundant number, since it is smaller than the sum of its proper divisors (3091824527388).

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

2123222031012 is a wasteful number, since it uses less digits than its factorization.

2123222031012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205836 (or 205834 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2123222031012 its reverse (2101302223212), we get a palindrome (4224524254224).

The spelling of 2123222031012 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-two million, thirty-one thousand, twelve".