202101222220220 has 24 divisors (see below), whose sum is σ = 424412836059408. Its totient is φ = 80840437574400.

The previous prime is 202101222220201. The next prime is 202101222220241. The reversal of 202101222220220 is 22022222101202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202101222220192 and 202101222220201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53829860 + ... + 57461780.

It is an arithmetic number, because the mean of its divisors is an integer number (17683868169142).

Almost surely, 2^{202101222220220} is an apocalyptic number.

202101222220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101222220220 is an abundant number, since it is smaller than the sum of its proper divisors (222311613839188).

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

202101222220220 is a wasteful number, since it uses less digits than its factorization.

202101222220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414221 (or 6414219 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 202101222220220 its reverse (22022222101202), we get a palindrome (224123444321422).

The spelling of 202101222220220 in words is "two hundred two trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".