221876049 has 32 divisors (see below), whose sum is σ = 311040000. Its totient is φ = 140571584.

The previous prime is 221876029. The next prime is 221876059. The reversal of 221876049 is 940678122.

It is a cyclic number.

It is not a de Polignac number, because 221876049 - 2⁷ = 221875921 is a prime.

It is a super-2 number, since 2×221876049² = 98457962239700802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221875998 and 221876016.

It is not an unprimeable number, because it can be changed into a prime (221876029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1239442 + ... + 1239620.

It is an arithmetic number, because the mean of its divisors is an integer number (9720000).

Almost surely, 2^221876049 is an apocalyptic number.

It is an amenable number.

221876049 is a deficient number, since it is larger than the sum of its proper divisors (89163951).

221876049 is a wasteful number, since it uses less digits than its factorization.

221876049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 221876049 is about 14895.5043217744. The cubic root of 221876049 is about 605.3921815733.

The spelling of 221876049 in words is "two hundred twenty-one million, eight hundred seventy-six thousand, forty-nine".