22120864429 has 2 divisors, whose sum is σ = 22120864430. Its totient is φ = 22120864428.

The previous prime is 22120864427. The next prime is 22120864459. The reversal of 22120864429 is 92446802122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13665142404 + 8455722025 = 116898^2 + 91955^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120864429 - 2¹ = 22120864427 is a prime.

Together with 22120864427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22120864391 and 22120864400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22120864427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060432214 + 11060432215.

It is an arithmetic number, because the mean of its divisors is an integer number (11060432215).

Almost surely, 2^22120864429 is an apocalyptic number.

It is an amenable number.

22120864429 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120864429 is an equidigital number, since it uses as much as digits as its factorization.

22120864429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 22120864429 in words is "twenty-two billion, one hundred twenty million, eight hundred sixty-four thousand, four hundred twenty-nine".