213243033321044 has 6 divisors (see below), whose sum is σ = 373175308311834. Its totient is φ = 106621516660520.

The previous prime is 213243033320923. The next prime is 213243033321049. The reversal of 213243033321044 is 440123330342312.

It can be written as a sum of positive squares in only one way, i.e., 109910481792400 + 103332551528644 = 10483820^2 + 10165262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213243033320995 and 213243033321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213243033321049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26655379165127 + ... + 26655379165134.

It is an arithmetic number, because the mean of its divisors is an integer number (62195884718639).

Almost surely, 2^{213243033321044} is an apocalyptic number.

It is an amenable number.

213243033321044 is a deficient number, since it is larger than the sum of its proper divisors (159932274990790).

213243033321044 is a wasteful number, since it uses less digits than its factorization.

213243033321044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53310758330265 (or 53310758330263 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 213243033321044 its reverse (440123330342312), we get a palindrome (653366363663356).

The spelling of 213243033321044 in words is "two hundred thirteen trillion, two hundred forty-three billion, thirty-three million, three hundred twenty-one thousand, forty-four".