221534462021442 has 8 divisors (see below), whose sum is σ = 443068924042896. Its totient is φ = 73844820673812.

The previous prime is 221534462021399. The next prime is 221534462021449. The reversal of 221534462021442 is 244120264435122.

It is a sphenic number, since it is the product of 3 distinct primes.

221534462021442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221534462021394 and 221534462021403.

It is not an unprimeable number, because it can be changed into a prime (221534462021449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18461205168448 + ... + 18461205168459.

It is an arithmetic number, because the mean of its divisors is an integer number (55383615505362).

Almost surely, 2^{221534462021442} is an apocalyptic number.

221534462021442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221534462021442 is a wasteful number, since it uses less digits than its factorization.

221534462021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36922410336912.

The product of its (nonzero) digits is 737280, while the sum is 42.

The spelling of 221534462021442 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred sixty-two million, twenty-one thousand, four hundred forty-two".