221535374441434 has 32 divisors (see below), whose sum is σ = 353728195347456. Its totient is φ = 103695637985280.

The previous prime is 221535374441429. The next prime is 221535374441441. The reversal of 221535374441434 is 434144473535122.

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, 62721034 + ... + 66158890.

It is an arithmetic number, because the mean of its divisors is an integer number (11054006104608).

Almost surely, 2^{221535374441434} is an apocalyptic number.

221535374441434 is a deficient number, since it is larger than the sum of its proper divisors (132192820906022).

221535374441434 is a wasteful number, since it uses less digits than its factorization.

221535374441434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447990.

The product of its digits is 19353600, while the sum is 52.

The spelling of 221535374441434 in words is "two hundred twenty-one trillion, five hundred thirty-five billion, three hundred seventy-four million, four hundred forty-one thousand, four hundred thirty-four".