33722222 has 4 divisors (see below), whose sum is σ = 50583336. Its totient is φ = 16861110.

The previous prime is 33722219. The next prime is 33722233. The reversal of 33722222 is 22222733.

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

It is a super-2 number, since 2×33722222² = 2274376513234568, 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, 8430554 + ... + 8430557.

It is an arithmetic number, because the mean of its divisors is an integer number (12645834).

Almost surely, 2^33722222 is an apocalyptic number.

33722222 is a deficient number, since it is larger than the sum of its proper divisors (16861114).

33722222 is a wasteful number, since it uses less digits than its factorization.

33722222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16861113.

The product of its digits is 2016, while the sum is 23.

The square root of 33722222 is about 5807.0837775944. The cubic root of 33722222 is about 323.0765185965.

Adding to 33722222 its reverse (22222733), we get a palindrome (55944955).

The spelling of 33722222 in words is "thirty-three million, seven hundred twenty-two thousand, two hundred twenty-two".