22211300311221 has 64 divisors (see below), whose sum is σ = 35356066099200. Its totient is φ = 12139995302400.

The previous prime is 22211300311219. The next prime is 22211300311273. The reversal of 22211300311221 is 12211300311222.

It is not a de Polignac number, because 22211300311221 - 2¹ = 22211300311219 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211300311021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9927535 + ... + 11957363.

It is an arithmetic number, because the mean of its divisors is an integer number (552438532800).

Almost surely, 2^{22211300311221} is an apocalyptic number.

22211300311221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22211300311221 is a deficient number, since it is larger than the sum of its proper divisors (13144765787979).

22211300311221 is a wasteful number, since it uses less digits than its factorization.

22211300311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030130.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 22211300311221 its reverse (12211300311222), we get a palindrome (34422600622443).

Subtracting from 22211300311221 its reverse (12211300311222), we obtain a palindrome (9999999999999).

The spelling of 22211300311221 in words is "twenty-two trillion, two hundred eleven billion, three hundred million, three hundred eleven thousand, two hundred twenty-one".