2213121115100 has 72 divisors (see below), whose sum is σ = 5605317903360. Its totient is φ = 742640022720.

The previous prime is 2213121115081. The next prime is 2213121115109. The reversal of 2213121115100 is 15111213122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213121115109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33601160 + ... + 33666959.

Almost surely, 2^{2213121115100} is an apocalyptic number.

2213121115100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213121115100 is an abundant number, since it is smaller than the sum of its proper divisors (3392196788260).

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

2213121115100 is a wasteful number, since it uses less digits than its factorization.

2213121115100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67268187 (or 67268180 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 2213121115100 its reverse (15111213122), we get a palindrome (2228232328222).

The spelling of 2213121115100 in words is "two trillion, two hundred thirteen billion, one hundred twenty-one million, one hundred fifteen thousand, one hundred".