202102100012220 has 48 divisors (see below), whose sum is σ = 565920495655200. Its totient is φ = 53890596610816.

The previous prime is 202102100012203. The next prime is 202102100012221. The reversal of 202102100012220 is 22210001201202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202102100012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102100012221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 102033567 + ... + 103995446.

It is an arithmetic number, because the mean of its divisors is an integer number (11790010326150).

Almost surely, 2^{202102100012220} is an apocalyptic number.

202102100012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102100012220 is an abundant number, since it is smaller than the sum of its proper divisors (363818395642980).

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

202102100012220 is a wasteful number, since it uses less digits than its factorization.

202102100012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206045374 (or 206045372 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202102100012220 its reverse (22210001201202), we get a palindrome (224312101213422).

The spelling of 202102100012220 in words is "two hundred two trillion, one hundred two billion, one hundred million, twelve thousand, two hundred twenty".