221534403655002 has 16 divisors (see below), whose sum is σ = 443485617113280. Its totient is φ = 73775332917792.

The previous prime is 221534403654953. The next prime is 221534403655009. The reversal of 221534403655002 is 200556304435122.

It is not an unprimeable number, because it can be changed into a prime (221534403655009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17367068227 + ... + 17367080982.

It is an arithmetic number, because the mean of its divisors is an integer number (27717851069580).

Almost surely, 2^{221534403655002} is an apocalyptic number.

221534403655002 is an abundant number, since it is smaller than the sum of its proper divisors (221951213458278).

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

221534403655002 is a wasteful number, since it uses less digits than its factorization.

221534403655002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34734150277.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 221534403655002 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred three million, six hundred fifty-five thousand, two".