215222234 has 16 divisors (see below), whose sum is σ = 340433280. Its totient is φ = 101764800.

The previous prime is 215222233. The next prime is 215222251. The reversal of 215222234 is 432222512.

215222234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215222234² = 92641220015901512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215222233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17759 + ... + 27309.

It is an arithmetic number, because the mean of its divisors is an integer number (21277080).

Almost surely, 2^215222234 is an apocalyptic number.

215222234 is a deficient number, since it is larger than the sum of its proper divisors (125211046).

215222234 is a wasteful number, since it uses less digits than its factorization.

215222234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10165.

The product of its digits is 1920, while the sum is 23.

The square root of 215222234 is about 14670.4544578551. The cubic root of 215222234 is about 599.2789801941.

Adding to 215222234 its reverse (432222512), we get a palindrome (647444746).

The spelling of 215222234 in words is "two hundred fifteen million, two hundred twenty-two thousand, two hundred thirty-four".