221442413214242 has 32 divisors (see below), whose sum is σ = 372771348307200. Its totient is φ = 97794952362880.

The previous prime is 221442413214151. The next prime is 221442413214283. The reversal of 221442413214242 is 242412314244122.

It is a junction number, because it is equal to n+sod(n) for n = 221442413214196 and 221442413214205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781467617 + ... + 781750932.

It is an arithmetic number, because the mean of its divisors is an integer number (11649104634600).

Almost surely, 2^{221442413214242} is an apocalyptic number.

221442413214242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221442413214242 is a deficient number, since it is larger than the sum of its proper divisors (151328935092958).

221442413214242 is a wasteful number, since it uses less digits than its factorization.

221442413214242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563218746.

The product of its digits is 196608, while the sum is 38.

Adding to 221442413214242 its reverse (242412314244122), we get a palindrome (463854727458364).

The spelling of 221442413214242 in words is "two hundred twenty-one trillion, four hundred forty-two billion, four hundred thirteen million, two hundred fourteen thousand, two hundred forty-two".