21022233313 has 4 divisors (see below), whose sum is σ = 21747137940. Its totient is φ = 20297328688.

The previous prime is 21022233311. The next prime is 21022233409. The reversal of 21022233313 is 31333222012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9291610449 + 11730622864 = 96393^2 + 108308^2 .

It is a cyclic number.

It is not a de Polignac number, because 21022233313 - 2¹ = 21022233311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022233311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362452270 + ... + 362452327.

It is an arithmetic number, because the mean of its divisors is an integer number (5436784485).

Almost surely, 2^21022233313 is an apocalyptic number.

It is an amenable number.

21022233313 is a deficient number, since it is larger than the sum of its proper divisors (724904627).

21022233313 is an equidigital number, since it uses as much as digits as its factorization.

21022233313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724904626.

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

Adding to 21022233313 its reverse (31333222012), we get a palindrome (52355455325).

The spelling of 21022233313 in words is "twenty-one billion, twenty-two million, two hundred thirty-three thousand, three hundred thirteen".