22154400420111 has 8 divisors (see below), whose sum is σ = 32821333955760. Its totient is φ = 14769600280056.

The previous prime is 22154400420091. The next prime is 22154400420133. The reversal of 22154400420111 is 11102400445122.

22154400420111 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 440 + 0 + 4 + 201 + 11 = 666.

It is not a de Polignac number, because 22154400420111 - 2²⁶ = 22154333311247 is a prime.

It is a super-2 number, since 2×22154400420111² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 820533348893 = 22154400420111 / (2 + 2 + 1 + 5 + 4 + 4 + 0 + 0 + 4 + 2 + 0 + 1 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154400420811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410266674420 + ... + 410266674473.

It is an arithmetic number, because the mean of its divisors is an integer number (4102666744470).

Almost surely, 2^{22154400420111} is an apocalyptic number.

22154400420111 is a deficient number, since it is larger than the sum of its proper divisors (10666933535649).

22154400420111 is an equidigital number, since it uses as much as digits as its factorization.

22154400420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820533348902 (or 820533348896 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 22154400420111 its reverse (11102400445122), we get a palindrome (33256800865233).

The spelling of 22154400420111 in words is "twenty-two trillion, one hundred fifty-four billion, four hundred million, four hundred twenty thousand, one hundred eleven".