22118743901 has 4 divisors (see below), whose sum is σ = 22120574592. Its totient is φ = 22116913212.

The previous prime is 22118743879. The next prime is 22118743909. The reversal of 22118743901 is 10934781122.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 22118743901 - 2¹⁴ = 22118727517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118743909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897101 + ... + 921426.

It is an arithmetic number, because the mean of its divisors is an integer number (5530143648).

Almost surely, 2^22118743901 is an apocalyptic number.

It is an amenable number.

22118743901 is a deficient number, since it is larger than the sum of its proper divisors (1830691).

22118743901 is a wasteful number, since it uses less digits than its factorization.

22118743901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830690.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 22118743901 in words is "twenty-two billion, one hundred eighteen million, seven hundred forty-three thousand, nine hundred one".