2123921329408 has 72 divisors (see below), whose sum is σ = 4246985034432. Its totient is φ = 1060099227648.

The previous prime is 2123921329351. The next prime is 2123921329423. The reversal of 2123921329408 is 8049231293212.

It is a super-2 number, since 2×2123921329408² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425889091 + ... + 425894077.

It is an arithmetic number, because the mean of its divisors is an integer number (58985903256).

Almost surely, 2^{2123921329408} is an apocalyptic number.

It is an amenable number.

2123921329408 is a deficient number, since it is larger than the sum of its proper divisors (2123063705024).

2123921329408 is a wasteful number, since it uses less digits than its factorization.

2123921329408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587 (or 7573 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 2123921329408 in words is "two trillion, one hundred twenty-three billion, nine hundred twenty-one million, three hundred twenty-nine thousand, four hundred eight".