215054222 has 8 divisors (see below), whose sum is σ = 322644000. Its totient is φ = 107506224.

The previous prime is 215054221. The next prime is 215054237. The reversal of 215054222 is 222450512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215054221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12554 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (40330500).

Almost surely, 2^215054222 is an apocalyptic number.

215054222 is a deficient number, since it is larger than the sum of its proper divisors (107589778).

215054222 is a wasteful number, since it uses less digits than its factorization.

215054222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20890.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 215054222 is about 14664.7271369092. The cubic root of 215054222 is about 599.1229983678.

The spelling of 215054222 in words is "two hundred fifteen million, fifty-four thousand, two hundred twenty-two".