221292086449 has 16 divisors (see below), whose sum is σ = 263989635840. Its totient is φ = 181371168000.

The previous prime is 221292086441. The next prime is 221292086453. The reversal of 221292086449 is 944680292122.

It is a cyclic number.

It is not a de Polignac number, because 221292086449 - 2³ = 221292086441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221292086441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254157 + ... + 712165.

It is an arithmetic number, because the mean of its divisors is an integer number (16499352240).

Almost surely, 2^221292086449 is an apocalyptic number.

It is an amenable number.

221292086449 is a deficient number, since it is larger than the sum of its proper divisors (42697549391).

221292086449 is a wasteful number, since it uses less digits than its factorization.

221292086449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461040.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 221292086449 in words is "two hundred twenty-one billion, two hundred ninety-two million, eighty-six thousand, four hundred forty-nine".