22116477 has 4 divisors (see below), whose sum is σ = 29488640. Its totient is φ = 14744316.

The previous prime is 22116443. The next prime is 22116481. The reversal of 22116477 is 77461122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22116477 - 2¹² = 22112381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22116487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686077 + ... + 3686082.

It is an arithmetic number, because the mean of its divisors is an integer number (7372160).

Almost surely, 2^22116477 is an apocalyptic number.

It is an amenable number.

22116477 is a deficient number, since it is larger than the sum of its proper divisors (7372163).

22116477 is an equidigital number, since it uses as much as digits as its factorization.

22116477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7372162.

The product of its digits is 4704, while the sum is 30.

The square root of 22116477 is about 4702.8158586107. The cubic root of 22116477 is about 280.6975676701.

Adding to 22116477 its reverse (77461122), we get a palindrome (99577599).

The spelling of 22116477 in words is "twenty-two million, one hundred sixteen thousand, four hundred seventy-seven".