22012312443 has 8 divisors (see below), whose sum is σ = 32017909056. Its totient is φ = 13340795400.

The previous prime is 22012312423. The next prime is 22012312457. The reversal of 22012312443 is 34421321022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22012312443 - 2⁵ = 22012312411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012312423) 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, 333519853 + ... + 333519918.

It is an arithmetic number, because the mean of its divisors is an integer number (4002238632).

Almost surely, 2^22012312443 is an apocalyptic number.

22012312443 is a deficient number, since it is larger than the sum of its proper divisors (10005596613).

22012312443 is a wasteful number, since it uses less digits than its factorization.

22012312443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667039785.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 22012312443 its reverse (34421321022), we get a palindrome (56433633465).

The spelling of 22012312443 in words is "twenty-two billion, twelve million, three hundred twelve thousand, four hundred forty-three".