213223722 has 16 divisors (see below), whose sum is σ = 429704352. Its totient is φ = 70531760.

The previous prime is 213223693. The next prime is 213223733. The reversal of 213223722 is 227322312.

It is a junction number, because it is equal to n+sod(n) for n = 213223692 and 213223701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134853 + ... + 136424.

It is an arithmetic number, because the mean of its divisors is an integer number (26856522).

Almost surely, 2^213223722 is an apocalyptic number.

213223722 is an abundant number, since it is smaller than the sum of its proper divisors (216480630).

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

213223722 is a wasteful number, since it uses less digits than its factorization.

213223722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271413.

The product of its digits is 2016, while the sum is 24.

The square root of 213223722 is about 14602.1820972073. The cubic root of 213223722 is about 597.4182793530.

The spelling of 213223722 in words is "two hundred thirteen million, two hundred twenty-three thousand, seven hundred twenty-two".