221240154504100 has 36 divisors (see below), whose sum is σ = 480212157343744. Its totient is φ = 88473753586080.

The previous prime is 221240154503971. The next prime is 221240154504113. The reversal of 221240154504100 is 1405451042122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278454012 + ... + 279247411.

Almost surely, 2^{221240154504100} is an apocalyptic number.

221240154504100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221240154504100 is an abundant number, since it is smaller than the sum of its proper divisors (258972002839644).

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

221240154504100 is a wasteful number, since it uses less digits than its factorization.

221240154504100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557705404 (or 557705397 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 221240154504100 in words is "two hundred twenty-one trillion, two hundred forty billion, one hundred fifty-four million, five hundred four thousand, one hundred".