2202120021 has 16 divisors (see below), whose sum is σ = 3000024000. Its totient is φ = 1436443008.

The previous prime is 2202119993. The next prime is 2202120031. The reversal of 2202120021 is 1200212022.

It is not a de Polignac number, because 2202120021 - 2⁶ = 2202119957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202119979 and 2202120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202120031) 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, 6816 + ... + 66713.

It is an arithmetic number, because the mean of its divisors is an integer number (187501500).

Almost surely, 2^2202120021 is an apocalyptic number.

It is an amenable number.

2202120021 is a deficient number, since it is larger than the sum of its proper divisors (797903979).

2202120021 is a wasteful number, since it uses less digits than its factorization.

2202120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73748.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2202120021 is about 46926.7516561716. The cubic root of 2202120021 is about 1301.0090826048.

Adding to 2202120021 its reverse (1200212022), we get a palindrome (3402332043).

The spelling of 2202120021 in words is "two billion, two hundred two million, one hundred twenty thousand, twenty-one".