221342431362126 has 16 divisors (see below), whose sum is σ = 442730317699200. Its totient is φ = 73773234624888.

The previous prime is 221342431362109. The next prime is 221342431362223. The reversal of 221342431362126 is 621263134243122.

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, 1893893986 + ... + 1894010853.

It is an arithmetic number, because the mean of its divisors is an integer number (27670644856200).

Almost surely, 2^{221342431362126} is an apocalyptic number.

221342431362126 is an abundant number, since it is smaller than the sum of its proper divisors (221387886337074).

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

221342431362126 is a wasteful number, since it uses less digits than its factorization.

221342431362126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787914583.

The product of its digits is 497664, while the sum is 42.

The spelling of 221342431362126 in words is "two hundred twenty-one trillion, three hundred forty-two billion, four hundred thirty-one million, three hundred sixty-two thousand, one hundred twenty-six".