221636050212342 has 32 divisors (see below), whose sum is σ = 451226701013760. Its totient is φ = 72555369495840.

The previous prime is 221636050212331. The next prime is 221636050212347. The reversal of 221636050212342 is 243212050636122.

It is a self number, because there is not a number n which added to its sum of digits gives 221636050212342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221636050212347) 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, 306245098 + ... + 306967965.

It is an arithmetic number, because the mean of its divisors is an integer number (14100834406680).

Almost surely, 2^{221636050212342} is an apocalyptic number.

221636050212342 is an abundant number, since it is smaller than the sum of its proper divisors (229590650801418).

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

221636050212342 is a wasteful number, since it uses less digits than its factorization.

221636050212342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613214148.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 221636050212342 in words is "two hundred twenty-one trillion, six hundred thirty-six billion, fifty million, two hundred twelve thousand, three hundred forty-two".