2121125554413 has 64 divisors (see below), whose sum is σ = 3308818636800. Its totient is φ = 1341153676800.

The previous prime is 2121125554369. The next prime is 2121125554423. The reversal of 2121125554413 is 3144555211212.

2121125554413 is a `hidden beast` number, since 2 + 1 + 211 + 25 + 5 + 5 + 4 + 413 = 666.

It is not a de Polignac number, because 2121125554413 - 2¹⁰ = 2121125553389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121125554423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9937945 + ... + 10149137.

It is an arithmetic number, because the mean of its divisors is an integer number (51700291200).

Almost surely, 2^{2121125554413} is an apocalyptic number.

It is an amenable number.

2121125554413 is a deficient number, since it is larger than the sum of its proper divisors (1187693082387).

2121125554413 is a wasteful number, since it uses less digits than its factorization.

2121125554413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211459 (or 211453 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 2121125554413 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-five million, five hundred fifty-four thousand, four hundred thirteen".