21213022313042 has 32 divisors (see below), whose sum is σ = 36863953318272. Its totient is φ = 8966606408064.

The previous prime is 21213022313033. The next prime is 21213022313053. The reversal of 21213022313042 is 24031322031212.

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, 77753513 + ... + 78025859.

It is an arithmetic number, because the mean of its divisors is an integer number (1151998541196).

Almost surely, 2^{21213022313042} is an apocalyptic number.

21213022313042 is a deficient number, since it is larger than the sum of its proper divisors (15650931005230).

21213022313042 is a wasteful number, since it uses less digits than its factorization.

21213022313042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348642.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21213022313042 its reverse (24031322031212), we get a palindrome (45244344344254).

It can be divided in two parts, 2121302 and 2313042, that added together give a palindrome (4434344).

The spelling of 21213022313042 in words is "twenty-one trillion, two hundred thirteen billion, twenty-two million, three hundred thirteen thousand, forty-two".