222000156500 has 24 divisors (see below), whose sum is σ = 484848342888. Its totient is φ = 88800062400.

The previous prime is 222000156487. The next prime is 222000156533. The reversal of 222000156500 is 5651000222.

It can be written as a sum of positive squares in 4 ways, for example, as 3617781904 + 218382374596 = 60148^2 + 467314^2 .

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, 221999657 + ... + 222000656.

It is an arithmetic number, because the mean of its divisors is an integer number (20202014287).

Almost surely, 2^222000156500 is an apocalyptic number.

222000156500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222000156500 is an abundant number, since it is smaller than the sum of its proper divisors (262848186388).

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

222000156500 is a wasteful number, since it uses less digits than its factorization.

222000156500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444000332 (or 444000320 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 222000156500 its reverse (5651000222), we get a palindrome (227651156722).

The spelling of 222000156500 in words is "two hundred twenty-two billion, one hundred fifty-six thousand, five hundred".