22370778242 has 6 divisors (see below), whose sum is σ = 33556484649. Its totient is φ = 11185283360.

The previous prime is 22370778191. The next prime is 22370778253. The reversal of 22370778242 is 24287707322.

It can be written as a sum of positive squares in 2 ways, for example, as 13978569361 + 8392208881 = 118231^2 + 91609^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105761.

It is a super-2 number, since 2×22370778242² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22370778193 and 22370778202.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 158642 + ... + 264402.

Almost surely, 2^22370778242 is an apocalyptic number.

22370778242 is a deficient number, since it is larger than the sum of its proper divisors (11185706407).

22370778242 is an frugal number, since it uses more digits than its factorization.

22370778242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211524 (or 105763 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 44.

The spelling of 22370778242 in words is "twenty-two billion, three hundred seventy million, seven hundred seventy-eight thousand, two hundred forty-two".