2120913401 has 4 divisors (see below), whose sum is σ = 2121206772. Its totient is φ = 2120620032.

The previous prime is 2120913397. The next prime is 2120913451. The reversal of 2120913401 is 1043190212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1560171001 + 560742400 = 39499^2 + 23680^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120913401 - 2² = 2120913397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2120913451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135560 + ... + 150393.

It is an arithmetic number, because the mean of its divisors is an integer number (530301693).

Almost surely, 2^2120913401 is an apocalyptic number.

It is an amenable number.

2120913401 is a deficient number, since it is larger than the sum of its proper divisors (293371).

2120913401 is an equidigital number, since it uses as much as digits as its factorization.

2120913401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293370.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2120913401 is about 46053.3755657498. The cubic root of 2120913401 is about 1284.8161255370.

The spelling of 2120913401 in words is "two billion, one hundred twenty million, nine hundred thirteen thousand, four hundred one".