22778296121 has 4 divisors (see below), whose sum is σ = 26032338432. Its totient is φ = 19524253812.

The previous prime is 22778296111. The next prime is 22778296127. The reversal of 22778296121 is 12169287722.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12169287722 = 2 ⋅6084643861.

It is not a de Polignac number, because 22778296121 - 2¹⁰ = 22778295097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22778296127) 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, 1627021145 + ... + 1627021158.

It is an arithmetic number, because the mean of its divisors is an integer number (6508084608).

Almost surely, 2^22778296121 is an apocalyptic number.

It is an amenable number.

22778296121 is a deficient number, since it is larger than the sum of its proper divisors (3254042311).

22778296121 is an equidigital number, since it uses as much as digits as its factorization.

22778296121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254042310.

The product of its digits is 338688, while the sum is 47.

The spelling of 22778296121 in words is "twenty-two billion, seven hundred seventy-eight million, two hundred ninety-six thousand, one hundred twenty-one".