22277222040 has 32 divisors (see below), whose sum is σ = 66831666480. Its totient is φ = 5940592512.

The previous prime is 22277221999. The next prime is 22277222041. The reversal of 22277222040 is 4022277222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22277221989 and 22277222007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22277222041) 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, 92821639 + ... + 92821878.

Almost surely, 2^22277222040 is an apocalyptic number.

22277222040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22277222040 is an abundant number, since it is smaller than the sum of its proper divisors (44554444440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22277222040 is a wasteful number, since it uses less digits than its factorization.

22277222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185643531 (or 185643527 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

Adding to 22277222040 its reverse (4022277222), we get a palindrome (26299499262).

The spelling of 22277222040 in words is "twenty-two billion, two hundred seventy-seven million, two hundred twenty-two thousand, forty".