2120121012007 has 4 divisors (see below), whose sum is σ = 2129460752376. Its totient is φ = 2110781271640.

The previous prime is 2120121011993. The next prime is 2120121012043. The reversal of 2120121012007 is 7002101210212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120121012007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120121012047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669869844 + ... + 4669870297.

It is an arithmetic number, because the mean of its divisors is an integer number (532365188094).

Almost surely, 2^{2120121012007} is an apocalyptic number.

2120121012007 is a deficient number, since it is larger than the sum of its proper divisors (9339740369).

2120121012007 is an equidigital number, since it uses as much as digits as its factorization.

2120121012007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339740368.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 2120121012007 its reverse (7002101210212), we get a palindrome (9122222222219).

The spelling of 2120121012007 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, twelve thousand, seven".