21322221121022 has 4 divisors (see below), whose sum is σ = 31983331681536. Its totient is φ = 10661110560510.

The previous prime is 21322221121013. The next prime is 21322221121027. The reversal of 21322221121022 is 22012112222312.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21322221121022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322221121027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330555280254 + ... + 5330555280257.

It is an arithmetic number, because the mean of its divisors is an integer number (7995832920384).

Almost surely, 2^{21322221121022} is an apocalyptic number.

21322221121022 is a deficient number, since it is larger than the sum of its proper divisors (10661110560514).

21322221121022 is a wasteful number, since it uses less digits than its factorization.

21322221121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10661110560513.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21322221121022 its reverse (22012112222312), we get a palindrome (43334333343334).

The spelling of 21322221121022 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty-two".