22135312240 has 40 divisors (see below), whose sum is σ = 53702196768. Its totient is φ = 8469162240.

The previous prime is 22135312237. The next prime is 22135312273. The reversal of 22135312240 is 4221353122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 6013191 + ... + 6016870.

Almost surely, 2^22135312240 is an apocalyptic number.

22135312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22135312240 is an abundant number, since it is smaller than the sum of its proper divisors (31566884528).

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

22135312240 is a wasteful number, since it uses less digits than its factorization.

22135312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12030097 (or 12030091 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 22135312240 its reverse (4221353122), we get a palindrome (26356665362).

The spelling of 22135312240 in words is "twenty-two billion, one hundred thirty-five million, three hundred twelve thousand, two hundred forty".