213022100220 has 48 divisors (see below), whose sum is σ = 612582478368. Its totient is φ = 55270598400.

The previous prime is 213022100201. The next prime is 213022100251. The reversal of 213022100220 is 22001220312.

It is a happy number.

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 213022100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47975731 + ... + 47980170.

It is an arithmetic number, because the mean of its divisors is an integer number (12762134966).

Almost surely, 2^213022100220 is an apocalyptic number.

213022100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213022100220 is an abundant number, since it is smaller than the sum of its proper divisors (399560378148).

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

213022100220 is a wasteful number, since it uses less digits than its factorization.

213022100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95955950 (or 95955948 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 213022100220 its reverse (22001220312), we get a palindrome (235023320532).

The spelling of 213022100220 in words is "two hundred thirteen billion, twenty-two million, one hundred thousand, two hundred twenty".