21023133322 has 4 divisors (see below), whose sum is σ = 31534699986. Its totient is φ = 10511566660.

The previous prime is 21023133293. The next prime is 21023133353. The reversal of 21023133322 is 22333132012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20923911801 + 99221521 = 144651^2 + 9961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21023133293 and 21023133302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255783329 + ... + 5255783332.

Almost surely, 2^21023133322 is an apocalyptic number.

21023133322 is a deficient number, since it is larger than the sum of its proper divisors (10511566664).

21023133322 is a wasteful number, since it uses less digits than its factorization.

21023133322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511566663.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21023133322 its reverse (22333132012), we get a palindrome (43356265334).

The spelling of 21023133322 in words is "twenty-one billion, twenty-three million, one hundred thirty-three thousand, three hundred twenty-two".