22212032021 has 4 divisors (see below), whose sum is σ = 22588507200. Its totient is φ = 21835556844.

The previous prime is 22212031999. The next prime is 22212032071. The reversal of 22212032021 is 12023021222.

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 a de Polignac number, because none of the positive numbers 2^k-22212032021 is a prime.

It is a super-3 number, since 3×22212032021³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212032071) 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, 188237501 + ... + 188237618.

It is an arithmetic number, because the mean of its divisors is an integer number (5647126800).

Almost surely, 2^22212032021 is an apocalyptic number.

It is an amenable number.

22212032021 is a deficient number, since it is larger than the sum of its proper divisors (376475179).

22212032021 is an equidigital number, since it uses as much as digits as its factorization.

22212032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376475178.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22212032021 its reverse (12023021222), we get a palindrome (34235053243).

The spelling of 22212032021 in words is "twenty-two billion, two hundred twelve million, thirty-two thousand, twenty-one".