2121121002099 has 32 divisors (see below), whose sum is σ = 3143661041664. Its totient is φ = 1261199796480.

The previous prime is 2121121002031. The next prime is 2121121002103. The reversal of 2121121002099 is 9902001211212.

It is not a de Polignac number, because 2121121002099 - 2¹¹ = 2121121000051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121121002599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54771567 + ... + 54810279.

It is an arithmetic number, because the mean of its divisors is an integer number (98239407552).

Almost surely, 2^{2121121002099} is an apocalyptic number.

2121121002099 is a deficient number, since it is larger than the sum of its proper divisors (1022540039565).

2121121002099 is a wasteful number, since it uses less digits than its factorization.

2121121002099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70107.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 2121121002099 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two thousand, ninety-nine".