221256443450130 has 32 divisors (see below), whose sum is σ = 579289597397568. Its totient is φ = 53637925684800.

The previous prime is 221256443450111. The next prime is 221256443450137. The reversal of 221256443450130 is 31054344652122.

It is a super-3 number, since 3×221256443450130³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221256443450137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335237035201 + ... + 335237035860.

It is an arithmetic number, because the mean of its divisors is an integer number (18102799918674).

Almost surely, 2^{221256443450130} is an apocalyptic number.

221256443450130 is an abundant number, since it is smaller than the sum of its proper divisors (358033153947438).

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

221256443450130 is a wasteful number, since it uses less digits than its factorization.

221256443450130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670474071082.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 221256443450130 in words is "two hundred twenty-one trillion, two hundred fifty-six billion, four hundred forty-three million, four hundred fifty thousand, one hundred thirty".