210042222 has 16 divisors (see below), whose sum is σ = 452398800. Its totient is φ = 64628352.

The previous prime is 210042199. The next prime is 210042257. The reversal of 210042222 is 222240012.

It is a congruent number.

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, 1346347 + ... + 1346502.

It is an arithmetic number, because the mean of its divisors is an integer number (28274925).

Almost surely, 2^210042222 is an apocalyptic number.

210042222 is an abundant number, since it is smaller than the sum of its proper divisors (242356578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210042222 is a wasteful number, since it uses less digits than its factorization.

210042222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692867.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 210042222 is about 14492.8334703742. The cubic root of 210042222 is about 594.4320282057.

Adding to 210042222 its reverse (222240012), we get a palindrome (432282234).

The spelling of 210042222 in words is "two hundred ten million, forty-two thousand, two hundred twenty-two".