221053922 has 4 divisors (see below), whose sum is σ = 331580886. Its totient is φ = 110526960.

The previous prime is 221053871. The next prime is 221053949. The reversal of 221053922 is 229350122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229350122 = 2 ⋅114675061.

It can be written as a sum of positive squares in only one way, i.e., 133425601 + 87628321 = 11551^2 + 9361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221053891 and 221053900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55263479 + ... + 55263482.

Almost surely, 2^221053922 is an apocalyptic number.

221053922 is a deficient number, since it is larger than the sum of its proper divisors (110526964).

221053922 is a wasteful number, since it uses less digits than its factorization.

221053922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110526963.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 221053922 is about 14867.8822298268. The cubic root of 221053922 is about 604.6435274534.

The spelling of 221053922 in words is "two hundred twenty-one million, fifty-three thousand, nine hundred twenty-two".