221877340851240 has 96 divisors (see below), whose sum is σ = 721417494306600. Its totient is φ = 59141351485440.

The previous prime is 221877340851113. The next prime is 221877340851269. The reversal of 221877340851240 is 42158043778122.

221877340851240 is a `hidden beast` number, since 2 + 2 + 1 + 8 + 7 + 7 + 340 + 8 + 51 + 240 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 199624176260964 + 22253164590276 = 14128842^2 + 4717326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134278785 + ... + 135921104.

Almost surely, 2^{221877340851240} is an apocalyptic number.

221877340851240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221877340851240 is an abundant number, since it is smaller than the sum of its proper divisors (499540153455360).

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

221877340851240 is a wasteful number, since it uses less digits than its factorization.

221877340851240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270202187 (or 270202180 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 221877340851240 in words is "two hundred twenty-one trillion, eight hundred seventy-seven billion, three hundred forty million, eight hundred fifty-one thousand, two hundred forty".