22145301240 has 32 divisors (see below), whose sum is σ = 66435904080. Its totient is φ = 5905413632.

The previous prime is 22145301137. The next prime is 22145301253. The reversal of 22145301240 is 4210354122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22145301240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92271969 + ... + 92272208.

Almost surely, 2^22145301240 is an apocalyptic number.

22145301240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22145301240 is an abundant number, since it is smaller than the sum of its proper divisors (44290602840).

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

22145301240 is a wasteful number, since it uses less digits than its factorization.

22145301240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184544191 (or 184544187 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 22145301240 its reverse (4210354122), we get a palindrome (26355655362).

The spelling of 22145301240 in words is "twenty-two billion, one hundred forty-five million, three hundred one thousand, two hundred forty".