221551260463140 has 96 divisors (see below), whose sum is σ = 642319681610880. Its totient is φ = 56991083498496.

The previous prime is 221551260463121. The next prime is 221551260463189. The reversal of 221551260463140 is 41364062155122.

It is a super-2 number, since 2×221551260463140² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221551260463092 and 221551260463101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56126002 + ... + 59943561.

It is an arithmetic number, because the mean of its divisors is an integer number (6690830016780).

Almost surely, 2^{221551260463140} is an apocalyptic number.

221551260463140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221551260463140 is an abundant number, since it is smaller than the sum of its proper divisors (420768421147740).

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

221551260463140 is a wasteful number, since it uses less digits than its factorization.

221551260463140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116070701 (or 116070699 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 221551260463140 in words is "two hundred twenty-one trillion, five hundred fifty-one billion, two hundred sixty million, four hundred sixty-three thousand, one hundred forty".