221931334 has 4 divisors (see below), whose sum is σ = 332897004. Its totient is φ = 110965666.

The previous prime is 221931323. The next prime is 221931341. The reversal of 221931334 is 433139122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×221931334² = 98507034022039112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55482832 + ... + 55482835.

It is an arithmetic number, because the mean of its divisors is an integer number (83224251).

Almost surely, 2^221931334 is an apocalyptic number.

221931334 is a deficient number, since it is larger than the sum of its proper divisors (110965670).

221931334 is a wasteful number, since it uses less digits than its factorization.

221931334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110965669.

The product of its digits is 3888, while the sum is 28.

The square root of 221931334 is about 14897.3599674573. The cubic root of 221931334 is about 605.4424593860.

The spelling of 221931334 in words is "two hundred twenty-one million, nine hundred thirty-one thousand, three hundred thirty-four".