2031022121 has 4 divisors (see below), whose sum is σ = 2061335952. Its totient is φ = 2000708292.

The previous prime is 2031022109. The next prime is 2031022127. The reversal of 2031022121 is 1212201302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031022121 - 2⁶ = 2031022057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031022096 and 2031022105.

It is not an unprimeable number, because it can be changed into a prime (2031022127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15156815 + ... + 15156948.

It is an arithmetic number, because the mean of its divisors is an integer number (515333988).

Almost surely, 2^2031022121 is an apocalyptic number.

It is an amenable number.

2031022121 is a deficient number, since it is larger than the sum of its proper divisors (30313831).

2031022121 is an equidigital number, since it uses as much as digits as its factorization.

2031022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30313830.

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

The square root of 2031022121 is about 45066.8627818711. The cubic root of 2031022121 is about 1266.4018934652.

Adding to 2031022121 its reverse (1212201302), we get a palindrome (3243223423).

The spelling of 2031022121 in words is "two billion, thirty-one million, twenty-two thousand, one hundred twenty-one".