22212021202021 has 8 divisors (see below), whose sum is σ = 25385226539904. Its totient is φ = 19038830727120.

The previous prime is 22212021202013. The next prime is 22212021202069. The reversal of 22212021202021 is 12020212021222.

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 22212021202021 - 2³ = 22212021202013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22212021202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212021202001) 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, 304570 + ... + 6672091.

It is an arithmetic number, because the mean of its divisors is an integer number (3173153317488).

Almost surely, 2^{22212021202021} is an apocalyptic number.

It is an amenable number.

22212021202021 is a deficient number, since it is larger than the sum of its proper divisors (3173205337883).

22212021202021 is an equidigital number, since it uses as much as digits as its factorization.

22212021202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7431491.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22212021202021 its reverse (12020212021222), we get a palindrome (34232233223243).

The spelling of 22212021202021 in words is "twenty-two trillion, two hundred twelve billion, twenty-one million, two hundred two thousand, twenty-one".