221434012042 has 32 divisors (see below), whose sum is σ = 345354274944. Its totient is φ = 106399641600.

The previous prime is 221434012013. The next prime is 221434012067. The reversal of 221434012042 is 240210434122.

It is a junction number, because it is equal to n+sod(n) for n = 221434011998 and 221434012016.

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, 6696273 + ... + 6729259.

It is an arithmetic number, because the mean of its divisors is an integer number (10792321092).

Almost surely, 2^221434012042 is an apocalyptic number.

221434012042 is a deficient number, since it is larger than the sum of its proper divisors (123920262902).

221434012042 is a wasteful number, since it uses less digits than its factorization.

221434012042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34254.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221434012042 its reverse (240210434122), we get a palindrome (461644446164).

The spelling of 221434012042 in words is "two hundred twenty-one billion, four hundred thirty-four million, twelve thousand, forty-two".