2121936338808 has 192 divisors, whose sum is σ = 6852388233600. Its totient is φ = 584689501440.

The previous prime is 2121936338807. The next prime is 2121936338813. The reversal of 2121936338808 is 8088336391212.

2121936338808 is a `hidden beast` number, since 2 + 12 + 193 + 63 + 388 + 0 + 8 = 666.

It is a super-2 number, since 2×2121936338808² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121936338807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 848178 + ... + 2227841.

It is an arithmetic number, because the mean of its divisors is an integer number (35689522050).

Almost surely, 2^{2121936338808} is an apocalyptic number.

It is an amenable number.

2121936338808 is an abundant number, since it is smaller than the sum of its proper divisors (4730451894792).

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

2121936338808 is a wasteful number, since it uses less digits than its factorization.

2121936338808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076122 (or 3076115 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 2121936338808 in words is "two trillion, one hundred twenty-one billion, nine hundred thirty-six million, three hundred thirty-eight thousand, eight hundred eight".