221197853042 has 16 divisors (see below), whose sum is σ = 335894211072. Its totient is φ = 109233908880.

The previous prime is 221197852991. The next prime is 221197853047. The reversal of 221197853042 is 240358791122.

It is a junction number, because it is equal to n+sod(n) for n = 221197852984 and 221197853002.

It is not an unprimeable number, because it can be changed into a prime (221197853047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366428 + ... + 759384.

It is an arithmetic number, because the mean of its divisors is an integer number (20993388192).

Almost surely, 2^221197853042 is an apocalyptic number.

221197853042 is a deficient number, since it is larger than the sum of its proper divisors (114696358030).

221197853042 is a wasteful number, since it uses less digits than its factorization.

221197853042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396433.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 221197853042 in words is "two hundred twenty-one billion, one hundred ninety-seven million, eight hundred fifty-three thousand, forty-two".