2122031021 has 4 divisors (see below), whose sum is σ = 2314942944. Its totient is φ = 1929119100.

The previous prime is 2122031011. The next prime is 2122031027. The reversal of 2122031021 is 1201302212.

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 2122031021 - 2¹⁸ = 2121768877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122030987 and 2122031005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122031027) 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, 96455945 + ... + 96455966.

It is an arithmetic number, because the mean of its divisors is an integer number (578735736).

Almost surely, 2^2122031021 is an apocalyptic number.

It is an amenable number.

2122031021 is a deficient number, since it is larger than the sum of its proper divisors (192911923).

2122031021 is a wasteful number, since it uses less digits than its factorization.

2122031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192911922.

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

The square root of 2122031021 is about 46065.5079316401. The cubic root of 2122031021 is about 1285.0417648061.

Adding to 2122031021 its reverse (1201302212), we get a palindrome (3323333233).

The spelling of 2122031021 in words is "two billion, one hundred twenty-two million, thirty-one thousand, twenty-one".