22111211220213 has 32 divisors (see below), whose sum is σ = 30457404237312. Its totient is φ = 14257644710400.

The previous prime is 22111211220151. The next prime is 22111211220223. The reversal of 22111211220213 is 31202211211122.

It is not a de Polignac number, because 22111211220213 - 2⁹ = 22111211219701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22111211220213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111211220223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155684553 + ... + 155826513.

It is an arithmetic number, because the mean of its divisors is an integer number (951793882416).

Almost surely, 2^{22111211220213} is an apocalyptic number.

It is an amenable number.

22111211220213 is a deficient number, since it is larger than the sum of its proper divisors (8346193017099).

22111211220213 is a wasteful number, since it uses less digits than its factorization.

22111211220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150285.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 22111211220213 its reverse (31202211211122), we get a palindrome (53313422431335).

Subtracting 22111211220213 from its reverse (31202211211122), we obtain a palindrome (9090999990909).

The spelling of 22111211220213 in words is "twenty-two trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty thousand, two hundred thirteen".