221312032442 has 16 divisors (see below), whose sum is σ = 336011779872. Its totient is φ = 109313053200.

The previous prime is 221312032429. The next prime is 221312032453. The reversal of 221312032442 is 244230213122.

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, 1147088 + ... + 1326059.

It is an arithmetic number, because the mean of its divisors is an integer number (21000736242).

Almost surely, 2^221312032442 is an apocalyptic number.

221312032442 is a deficient number, since it is larger than the sum of its proper divisors (114699747430).

221312032442 is a wasteful number, since it uses less digits than its factorization.

221312032442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473693.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221312032442 its reverse (244230213122), we get a palindrome (465542245564).

The spelling of 221312032442 in words is "two hundred twenty-one billion, three hundred twelve million, thirty-two thousand, four hundred forty-two".