22012219993 has 2 divisors, whose sum is σ = 22012219994. Its totient is φ = 22012219992.

The previous prime is 22012219981. The next prime is 22012220033. The reversal of 22012219993 is 39991221022.

It is an a-pointer prime, because the next prime (22012220033) can be obtained adding 22012219993 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16970793984 + 5041426009 = 130272^2 + 71003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012219993 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012219963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006109996 + 11006109997.

It is an arithmetic number, because the mean of its divisors is an integer number (11006109997).

Almost surely, 2^22012219993 is an apocalyptic number.

It is an amenable number.

22012219993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012219993 is an equidigital number, since it uses as much as digits as its factorization.

22012219993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 22012219993 in words is "twenty-two billion, twelve million, two hundred nineteen thousand, nine hundred ninety-three".