20201221200022 has 8 divisors (see below), whose sum is σ = 30301853257872. Its totient is φ = 10100603447400.

The previous prime is 20201221199927. The next prime is 20201221200031. The reversal of 20201221200022 is 22000212210202.

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 = 20201221199969 and 20201221200005.

It is a congruent number.

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, 1264647 + ... + 6480877.

It is an arithmetic number, because the mean of its divisors is an integer number (3787731657234).

Almost surely, 2^{20201221200022} is an apocalyptic number.

20201221200022 is a deficient number, since it is larger than the sum of its proper divisors (10100632057850).

20201221200022 is a wasteful number, since it uses less digits than its factorization.

20201221200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7152614.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20201221200022 its reverse (22000212210202), we get a palindrome (42201433410224).

The spelling of 20201221200022 in words is "twenty trillion, two hundred one billion, two hundred twenty-one million, two hundred thousand, twenty-two".