2123204950872 has 96 divisors (see below), whose sum is σ = 5819542260480. Its totient is φ = 699258147840.

The previous prime is 2123204950849. The next prime is 2123204950891. The reversal of 2123204950872 is 2780594023212.

2123204950872 is a `hidden beast` number, since 2 + 1 + 2 + 32 + 0 + 49 + 508 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2167497 + ... + 2990727.

It is an arithmetic number, because the mean of its divisors is an integer number (60620231880).

Almost surely, 2^{2123204950872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123204950872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909771130240).

2123204950872 is an abundant number, since it is smaller than the sum of its proper divisors (3696337309608).

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

2123204950872 is a wasteful number, since it uses less digits than its factorization.

2123204950872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823673 (or 823666 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 2123204950872 in words is "two trillion, one hundred twenty-three billion, two hundred four million, nine hundred fifty thousand, eight hundred seventy-two".