21222442967 has 4 divisors (see below), whose sum is σ = 23151755976. Its totient is φ = 19293129960.

The previous prime is 21222442909. The next prime is 21222442973. The reversal of 21222442967 is 76924422212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222442967 is a prime.

It is a super-4 number, since 4×21222442967⁴ (a number of 42 digits) contains 4444 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 (21222445967) 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, 964656488 + ... + 964656509.

It is an arithmetic number, because the mean of its divisors is an integer number (5787938994).

Almost surely, 2^21222442967 is an apocalyptic number.

21222442967 is a deficient number, since it is larger than the sum of its proper divisors (1929313009).

21222442967 is a wasteful number, since it uses less digits than its factorization.

21222442967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929313008.

The product of its digits is 193536, while the sum is 41.

The spelling of 21222442967 in words is "twenty-one billion, two hundred twenty-two million, four hundred forty-two thousand, nine hundred sixty-seven".