213504222 has 16 divisors (see below), whose sum is σ = 427712400. Its totient is φ = 71050752.

The previous prime is 213504211. The next prime is 213504229. The reversal of 213504222 is 222405312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213504229) 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, 25347 + ... + 32702.

It is an arithmetic number, because the mean of its divisors is an integer number (26732025).

Almost surely, 2^213504222 is an apocalyptic number.

213504222 is an abundant number, since it is smaller than the sum of its proper divisors (214208178).

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

213504222 is a wasteful number, since it uses less digits than its factorization.

213504222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58667.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 213504222 is about 14611.7836693540. The cubic root of 213504222 is about 597.6801363927.

Adding to 213504222 its reverse (222405312), we get a palindrome (435909534).

The spelling of 213504222 in words is "two hundred thirteen million, five hundred four thousand, two hundred twenty-two".