221240240358 has 16 divisors (see below), whose sum is σ = 442551115776. Its totient is φ = 73734974280.

The previous prime is 221240240341. The next prime is 221240240359. The reversal of 221240240358 is 853042042122.

It is a super-2 number, since 2×221240240358² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221240240359) 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, 2902366 + ... + 2977617.

It is an arithmetic number, because the mean of its divisors is an integer number (27659444736).

Almost surely, 2^221240240358 is an apocalyptic number.

221240240358 is an abundant number, since it is smaller than the sum of its proper divisors (221310875418).

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

221240240358 is a wasteful number, since it uses less digits than its factorization.

221240240358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886259.

The product of its (nonzero) digits is 30720, while the sum is 33.

The spelling of 221240240358 in words is "two hundred twenty-one billion, two hundred forty million, two hundred forty thousand, three hundred fifty-eight".