2129795152121 has 16 divisors (see below), whose sum is σ = 2622262185984. Its totient is φ = 1684485319104.

The previous prime is 2129795152097. The next prime is 2129795152127. The reversal of 2129795152121 is 1212515979212.

It is a de Polignac number, because none of the positive numbers 2^k-2129795152121 is a prime.

It is a super-2 number, since 2×2129795152121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2129795152127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4110590 + ... + 4599623.

It is an arithmetic number, because the mean of its divisors is an integer number (163891386624).

Almost surely, 2^{2129795152121} is an apocalyptic number.

It is an amenable number.

2129795152121 is a deficient number, since it is larger than the sum of its proper divisors (492467033863).

2129795152121 is a wasteful number, since it uses less digits than its factorization.

2129795152121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712920.

The product of its digits is 226800, while the sum is 47.

The spelling of 2129795152121 in words is "two trillion, one hundred twenty-nine billion, seven hundred ninety-five million, one hundred fifty-two thousand, one hundred twenty-one".