221291592342 has 32 divisors (see below), whose sum is σ = 450938801760. Its totient is φ = 72377176320.

The previous prime is 221291592337. The next prime is 221291592367. The reversal of 221291592342 is 243295192122.

It is a junction number, because it is equal to n+sod(n) for n = 221291592294 and 221291592303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589453 + ... + 888840.

It is an arithmetic number, because the mean of its divisors is an integer number (14091837555).

Almost surely, 2^221291592342 is an apocalyptic number.

221291592342 is an abundant number, since it is smaller than the sum of its proper divisors (229647209418).

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

221291592342 is a wasteful number, since it uses less digits than its factorization.

221291592342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478768.

The product of its digits is 155520, while the sum is 42.

The spelling of 221291592342 in words is "two hundred twenty-one billion, two hundred ninety-one million, five hundred ninety-two thousand, three hundred forty-two".