2120121012005 has 16 divisors (see below), whose sum is σ = 2656682769024. Its totient is φ = 1621178581440.

The previous prime is 2120121011993. The next prime is 2120121012043. The reversal of 2120121012005 is 5002101210212.

It is not a de Polignac number, because 2120121012005 - 2¹⁰ = 2120121010981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6515999 + ... + 6833628.

It is an arithmetic number, because the mean of its divisors is an integer number (166042673064).

Almost surely, 2^{2120121012005} is an apocalyptic number.

It is an amenable number.

2120121012005 is a deficient number, since it is larger than the sum of its proper divisors (536561757019).

2120121012005 is a wasteful number, since it uses less digits than its factorization.

2120121012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13351036.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 2120121012005 its reverse (5002101210212), we get a palindrome (7122222222217).

The spelling of 2120121012005 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, twelve thousand, five".