22051220479 has 4 divisors (see below), whose sum is σ = 22057182360. Its totient is φ = 22045258600.

The previous prime is 22051220473. The next prime is 22051220501. The reversal of 22051220479 is 97402215022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22051220479 - 2¹⁹ = 22050696191 is a prime.

It is a super-2 number, since 2×22051220479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051220473) 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, 2975389 + ... + 2982790.

It is an arithmetic number, because the mean of its divisors is an integer number (5514295590).

Almost surely, 2^22051220479 is an apocalyptic number.

22051220479 is a deficient number, since it is larger than the sum of its proper divisors (5961881).

22051220479 is an equidigital number, since it uses as much as digits as its factorization.

22051220479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961880.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 22051220479 in words is "twenty-two billion, fifty-one million, two hundred twenty thousand, four hundred seventy-nine".