166022210 has 16 divisors (see below), whose sum is σ = 299354616. Its totient is φ = 66294528.

The previous prime is 166022203. The next prime is 166022231. The reversal of 166022210 is 12220661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 162843121 + 3179089 = 12761^2 + 1783^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8069 + ... + 19928.

Almost surely, 2^166022210 is an apocalyptic number.

166022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166022210 is a deficient number, since it is larger than the sum of its proper divisors (133332406).

166022210 is a wasteful number, since it uses less digits than its factorization.

166022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28597.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 166022210 is about 12884.9606130558. The cubic root of 166022210 is about 549.6109755900.

Adding to 166022210 its reverse (12220661), we get a palindrome (178242871).

The spelling of 166022210 in words is "one hundred sixty-six million, twenty-two thousand, two hundred ten".