22125513213550 has 48 divisors (see below), whose sum is σ = 43321554028800. Its totient is φ = 8383993106400.

The previous prime is 22125513213439. The next prime is 22125513213553. The reversal of 22125513213550 is 5531231552122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22125513213553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19132731 + ... + 20256169.

It is an arithmetic number, because the mean of its divisors is an integer number (902532375600).

Almost surely, 2^{22125513213550} is an apocalyptic number.

22125513213550 is a deficient number, since it is larger than the sum of its proper divisors (21196040815250).

22125513213550 is a wasteful number, since it uses less digits than its factorization.

22125513213550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144201 (or 1144196 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 22125513213550 its reverse (5531231552122), we get a palindrome (27656744765672).

The spelling of 22125513213550 in words is "twenty-two trillion, one hundred twenty-five billion, five hundred thirteen million, two hundred thirteen thousand, five hundred fifty".