2202212021 has 4 divisors (see below), whose sum is σ = 2203534752. Its totient is φ = 2200889292.

The previous prime is 2202212009. The next prime is 2202212039. The reversal of 2202212021 is 1202122022.

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 2202212021 - 2¹⁸ = 2201949877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2202211987 and 2202212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202212071) 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, 658865 + ... + 662198.

It is an arithmetic number, because the mean of its divisors is an integer number (550883688).

Almost surely, 2^2202212021 is an apocalyptic number.

It is an amenable number.

2202212021 is a deficient number, since it is larger than the sum of its proper divisors (1322731).

2202212021 is a wasteful number, since it uses less digits than its factorization.

2202212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322730.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2202212021 is about 46927.7318970350. The cubic root of 2202212021 is about 1301.0272001715.

Adding to 2202212021 its reverse (1202122022), we get a palindrome (3404334043).

It can be divided in two parts, 22022 and 12021, that added together give a palindrome (34043).

The spelling of 2202212021 in words is "two billion, two hundred two million, two hundred twelve thousand, twenty-one".