212021113104 has 60 divisors (see below), whose sum is σ = 593475733500. Its totient is φ = 70660472832.

The previous prime is 212021113079. The next prime is 212021113163. The reversal of 212021113104 is 401311120212.

It can be written as a sum of positive squares in 2 ways, for example, as 24317283600 + 187703829504 = 155940^2 + 433248^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649552 + ... + 919760.

It is an arithmetic number, because the mean of its divisors is an integer number (9891262225).

Almost surely, 2^212021113104 is an apocalyptic number.

212021113104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212021113104 is an abundant number, since it is smaller than the sum of its proper divisors (381454620396).

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

212021113104 is a wasteful number, since it uses less digits than its factorization.

212021113104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275672 (or 275663 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212021113104 its reverse (401311120212), we get a palindrome (613332233316).

The spelling of 212021113104 in words is "two hundred twelve billion, twenty-one million, one hundred thirteen thousand, one hundred four".