20222221000122 has 48 divisors (see below), whose sum is σ = 44884417916520. Its totient is φ = 6576192576000.

The previous prime is 20222221000103. The next prime is 20222221000139. The reversal of 20222221000122 is 22100012222202.

It can be written as a sum of positive squares in 4 ways, for example, as 8862415874361 + 11359805125761 = 2976981^2 + 3370431^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20222221000095 and 20222221000104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37940872 + ... + 38470172.

Almost surely, 2^{20222221000122} is an apocalyptic number.

20222221000122 is an abundant number, since it is smaller than the sum of its proper divisors (24662196916398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20222221000122 is a wasteful number, since it uses less digits than its factorization.

20222221000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581119 (or 581116 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20222221000122 its reverse (22100012222202), we get a palindrome (42322233222324).

The spelling of 20222221000122 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.