221516542342 has 16 divisors (see below), whose sum is σ = 334517068080. Its totient is φ = 110013178752.

The previous prime is 221516542309. The next prime is 221516542439. The reversal of 221516542342 is 243245615122.

221516542342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390528 + ... + 771715.

It is an arithmetic number, because the mean of its divisors is an integer number (20907316755).

Almost surely, 2^221516542342 is an apocalyptic number.

221516542342 is a deficient number, since it is larger than the sum of its proper divisors (113000525738).

221516542342 is a wasteful number, since it uses less digits than its factorization.

221516542342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162887.

The product of its digits is 115200, while the sum is 37.

The spelling of 221516542342 in words is "two hundred twenty-one billion, five hundred sixteen million, five hundred forty-two thousand, three hundred forty-two".