213204224044 has 48 divisors (see below), whose sum is σ = 436801397760. Its totient is φ = 89168791680.

The previous prime is 213204223961. The next prime is 213204224059. The reversal of 213204224044 is 440422402312.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 244692 + ... + 697339.

It is an arithmetic number, because the mean of its divisors is an integer number (9100029120).

Almost surely, 2^213204224044 is an apocalyptic number.

It is an amenable number.

213204224044 is an abundant number, since it is smaller than the sum of its proper divisors (223597173716).

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

213204224044 is a wasteful number, since it uses less digits than its factorization.

213204224044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942238 (or 942236 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 213204224044 its reverse (440422402312), we get a palindrome (653626626356).

The spelling of 213204224044 in words is "two hundred thirteen billion, two hundred four million, two hundred twenty-four thousand, forty-four".