202110202011220 has 24 divisors (see below), whose sum is σ = 427134809097864. Its totient is φ = 80329150352256.

The previous prime is 202110202011167. The next prime is 202110202011229. The reversal of 202110202011220 is 22110202011202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57142774592656 + 144967427418564 = 7559284^2 + 12040242^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202110202011194 and 202110202011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110202011229) 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, 32183150047 + ... + 32183156326.

It is an arithmetic number, because the mean of its divisors is an integer number (17797283712411).

Almost surely, 2^{202110202011220} is an apocalyptic number.

202110202011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202110202011220 is an abundant number, since it is smaller than the sum of its proper divisors (225024607086644).

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

202110202011220 is a wasteful number, since it uses less digits than its factorization.

202110202011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64366306539 (or 64366306537 counting only the distinct ones).

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

Adding to 202110202011220 its reverse (22110202011202), we get a palindrome (224220404022422).

The spelling of 202110202011220 in words is "two hundred two trillion, one hundred ten billion, two hundred two million, eleven thousand, two hundred twenty".