202111113220 has 12 divisors (see below), whose sum is σ = 424433337804. Its totient is φ = 80844445280.

The previous prime is 202111113181. The next prime is 202111113287. The reversal of 202111113220 is 22311111202.

It can be written as a sum of positive squares in 2 ways, for example, as 63351883204 + 138759230016 = 251698^2 + 372504^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202111113194 and 202111113203.

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, 5052777811 + ... + 5052777850.

It is an arithmetic number, because the mean of its divisors is an integer number (35369444817).

Almost surely, 2^202111113220 is an apocalyptic number.

202111113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111113220 is an abundant number, since it is smaller than the sum of its proper divisors (222322224584).

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

202111113220 is a wasteful number, since it uses less digits than its factorization.

202111113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105555670 (or 10105555668 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 202111113220 its reverse (22311111202), we get a palindrome (224422224422).

The spelling of 202111113220 in words is "two hundred two billion, one hundred eleven million, one hundred thirteen thousand, two hundred twenty".