20211201102220 has 24 divisors (see below), whose sum is σ = 42588380764944. Its totient is φ = 8056888355136.

The previous prime is 20211201102203. The next prime is 20211201102223. The reversal of 20211201102220 is 2220110211202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211201102194 and 20211201102203.

It is not an unprimeable number, because it can be changed into a prime (20211201102223) 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, 1724499354 + ... + 1724511073.

It is an arithmetic number, because the mean of its divisors is an integer number (1774515865206).

Almost surely, 2^{20211201102220} is an apocalyptic number.

20211201102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211201102220 is an abundant number, since it is smaller than the sum of its proper divisors (22377179662724).

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

20211201102220 is a wasteful number, since it uses less digits than its factorization.

20211201102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449010729 (or 3449010727 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211201102220 its reverse (2220110211202), we get a palindrome (22431311313422).

The spelling of 20211201102220 in words is "twenty trillion, two hundred eleven billion, two hundred one million, one hundred two thousand, two hundred twenty".