22010222021 has 4 divisors (see below), whose sum is σ = 22022297472. Its totient is φ = 21998146572.

The previous prime is 22010221973. The next prime is 22010222027. The reversal of 22010222021 is 12022201022.

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 22010222021 - 2⁶ = 22010221957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22010221987 and 22010222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010222027) 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, 6034991 + ... + 6038636.

It is an arithmetic number, because the mean of its divisors is an integer number (5505574368).

Almost surely, 2^22010222021 is an apocalyptic number.

It is an amenable number.

22010222021 is a deficient number, since it is larger than the sum of its proper divisors (12075451).

22010222021 is a wasteful number, since it uses less digits than its factorization.

22010222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075450.

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

Adding to 22010222021 its reverse (12022201022), we get a palindrome (34032423043).

The spelling of 22010222021 in words is "twenty-two billion, ten million, two hundred twenty-two thousand, twenty-one".