2121331204134 has 24 divisors (see below), whose sum is σ = 4596572569680. Its totient is φ = 707055792048.

The previous prime is 2121331204123. The next prime is 2121331204253. The reversal of 2121331204134 is 4314021331212.

2121331204134 is a `hidden beast` number, since 2 + 1 + 213 + 31 + 2 + 0 + 413 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2121331204098 and 2121331204107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4310889 + ... + 4777700.

It is an arithmetic number, because the mean of its divisors is an integer number (191523857070).

Almost surely, 2^{2121331204134} is an apocalyptic number.

2121331204134 is an abundant number, since it is smaller than the sum of its proper divisors (2475241365546).

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

2121331204134 is a wasteful number, since it uses less digits than its factorization.

2121331204134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101564 (or 9101561 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 2121331204134 its reverse (4314021331212), we get a palindrome (6435352535346).

The spelling of 2121331204134 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-one million, two hundred four thousand, one hundred thirty-four".