213110221122 has 96 divisors (see below), whose sum is σ = 500901772800. Its totient is φ = 65331463680.

The previous prime is 213110221109. The next prime is 213110221213. The reversal of 213110221122 is 221122011312.

213110221122 is a `hidden beast` number, since 213 + 110 + 221 + 122 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 213110221095 and 213110221104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 767754 + ... + 1007802.

It is an arithmetic number, because the mean of its divisors is an integer number (5217726800).

Almost surely, 2^213110221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213110221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250450886400).

213110221122 is an abundant number, since it is smaller than the sum of its proper divisors (287791551678).

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

213110221122 is a wasteful number, since it uses less digits than its factorization.

213110221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240168 (or 240165 counting only the distinct ones).

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

Adding to 213110221122 its reverse (221122011312), we get a palindrome (434232232434).

The spelling of 213110221122 in words is "two hundred thirteen billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-two".