213122044 has 24 divisors (see below), whose sum is σ = 392162400. Its totient is φ = 101196480.

The previous prime is 213122033. The next prime is 213122053. The reversal of 213122044 is 440221312.

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, 7984 + ... + 22135.

It is an arithmetic number, because the mean of its divisors is an integer number (16340100).

Almost surely, 2^213122044 is an apocalyptic number.

It is an amenable number.

213122044 is a deficient number, since it is larger than the sum of its proper divisors (179040356).

213122044 is a wasteful number, since it uses less digits than its factorization.

213122044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30213 (or 30211 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213122044 is about 14598.7000791166. The cubic root of 213122044 is about 597.3233025006.

Adding to 213122044 its reverse (440221312), we get a palindrome (653343356).

The spelling of 213122044 in words is "two hundred thirteen million, one hundred twenty-two thousand, forty-four".