221225315301500 has 24 divisors (see below), whose sum is σ = 483156088619568. Its totient is φ = 88490126120400.

The previous prime is 221225315301499. The next prime is 221225315301521. The reversal of 221225315301500 is 5103513522122.

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, 221225314802 + ... + 221225315801.

It is an arithmetic number, because the mean of its divisors is an integer number (20131503692482).

Almost surely, 2^{221225315301500} is an apocalyptic number.

221225315301500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221225315301500 is an abundant number, since it is smaller than the sum of its proper divisors (261930773318068).

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

221225315301500 is a wasteful number, since it uses less digits than its factorization.

221225315301500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442450630622 (or 442450630610 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 221225315301500 its reverse (5103513522122), we get a palindrome (226328828823622).

The spelling of 221225315301500 in words is "two hundred twenty-one trillion, two hundred twenty-five billion, three hundred fifteen million, three hundred one thousand, five hundred".