2202010021 has 4 divisors (see below), whose sum is σ = 2202115072. Its totient is φ = 2201904972.

The previous prime is 2202009989. The next prime is 2202010039. The reversal of 2202010021 is 1200102022.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2202010021 - 2⁵ = 2202009989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202010621) 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, 9135 + ... + 66988.

It is an arithmetic number, because the mean of its divisors is an integer number (550528768).

Almost surely, 2^2202010021 is an apocalyptic number.

It is an amenable number.

2202010021 is a deficient number, since it is larger than the sum of its proper divisors (105051).

2202010021 is an equidigital number, since it uses as much as digits as its factorization.

2202010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105050.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2202010021 is about 46925.5796021743. The cubic root of 2202010021 is about 1300.9874196345.

Adding to 2202010021 its reverse (1200102022), we get a palindrome (3402112043).

It can be divided in two parts, 22020 and 10021, that added together give a square (32041 = 179²).

The spelling of 2202010021 in words is "two billion, two hundred two million, ten thousand, twenty-one".