2121030401 has 16 divisors (see below), whose sum is σ = 2576895360. Its totient is φ = 1705276800.

The previous prime is 2121030383. The next prime is 2121030419. The reversal of 2121030401 is 1040301212.

It is an interprime number because it is at equal distance from previous prime (2121030383) and next prime (2121030419).

It is a cyclic number.

It is not a de Polignac number, because 2121030401 - 2⁶ = 2121030337 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 (2121030601) 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, 65516 + ... + 92381.

It is an arithmetic number, because the mean of its divisors is an integer number (161055960).

Almost surely, 2^2121030401 is an apocalyptic number.

It is an amenable number.

2121030401 is a deficient number, since it is larger than the sum of its proper divisors (455864959).

2121030401 is a wasteful number, since it uses less digits than its factorization.

2121030401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158024.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2121030401 is about 46054.6458134247. The cubic root of 2121030401 is about 1284.8397506918.

Adding to 2121030401 its reverse (1040301212), we get a palindrome (3161331613).

The spelling of 2121030401 in words is "two billion, one hundred twenty-one million, thirty thousand, four hundred one".