2211220322220 has 192 divisors, whose sum is σ = 8068453134336. Its totient is φ = 439099453440.

The previous prime is 2211220322177. The next prime is 2211220322261. The reversal of 2211220322220 is 222230221122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11818516 + ... + 12004155.

It is an arithmetic number, because the mean of its divisors is an integer number (42023193408).

Almost surely, 2^{2211220322220} is an apocalyptic number.

2211220322220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211220322220 is an abundant number, since it is smaller than the sum of its proper divisors (5857232812116).

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

2211220322220 is a wasteful number, since it uses less digits than its factorization.

2211220322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23822720 (or 23822718 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 2211220322220 its reverse (222230221122), we get a palindrome (2433450543342).

The spelling of 2211220322220 in words is "two trillion, two hundred eleven billion, two hundred twenty million, three hundred twenty-two thousand, two hundred twenty".