20211222122122 has 8 divisors (see below), whose sum is σ = 30319318817316. Its totient is φ = 10104782516352.

The previous prime is 20211222122107. The next prime is 20211222122159. The reversal of 20211222122122 is 22122122211202.

It can be written as a sum of positive squares in 2 ways, for example, as 19394062169161 + 817159952961 = 4403869^2 + 903969^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20211222122093 and 20211222122102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414241863 + ... + 414290650.

Almost surely, 2^{20211222122122} is an apocalyptic number.

20211222122122 is a deficient number, since it is larger than the sum of its proper divisors (10108096695194).

20211222122122 is a wasteful number, since it uses less digits than its factorization.

20211222122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828544712.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20211222122122 its reverse (22122122211202), we get a palindrome (42333344333324).

The spelling of 20211222122122 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".