213222000 has 80 divisors (see below), whose sum is σ = 687447072. Its totient is φ = 56857600.

The previous prime is 213221963. The next prime is 213222013. The reversal of 213222000 is 222312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11769 + ... + 23768.

Almost surely, 2^213222000 is an apocalyptic number.

213222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213222000 is an abundant number, since it is smaller than the sum of its proper divisors (474225072).

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

213222000 is a wasteful number, since it uses less digits than its factorization.

213222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35563 (or 35547 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 213222000 is about 14602.1231332981. The cubic root of 213222000 is about 597.4166710937.

Adding to 213222000 its reverse (222312), we get a palindrome (213444312).

The spelling of 213222000 in words is "two hundred thirteen million, two hundred twenty-two thousand".