22202222102021 has 8 divisors (see below), whose sum is σ = 23966878898424. Its totient is φ = 20445678671040.

The previous prime is 22202222102017. The next prime is 22202222102057. The reversal of 22202222102021 is 12020122220222.

It can be written as a sum of positive squares in 4 ways, for example, as 1270782744100 + 20931439357921 = 1127290^2 + 4575089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22202222102021 - 2² = 22202222102017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202222101984 and 22202222102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202222002021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028335666 + ... + 2028346611.

It is an arithmetic number, because the mean of its divisors is an integer number (2995859862303).

Almost surely, 2^{22202222102021} is an apocalyptic number.

It is an amenable number.

22202222102021 is a deficient number, since it is larger than the sum of its proper divisors (1764656796403).

22202222102021 is a wasteful number, since it uses less digits than its factorization.

22202222102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056682711.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22202222102021 its reverse (12020122220222), we get a palindrome (34222344322243).

The spelling of 22202222102021 in words is "twenty-two trillion, two hundred two billion, two hundred twenty-two million, one hundred two thousand, twenty-one".