21012222313 has 8 divisors (see below), whose sum is σ = 21846083840. Its totient is φ = 20188113840.

The previous prime is 21012222311. The next prime is 21012222317. The reversal of 21012222313 is 31322221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21012222313 - 2¹ = 21012222311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012222311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2433870 + ... + 2442487.

It is an arithmetic number, because the mean of its divisors is an integer number (2730760480).

Almost surely, 2^21012222313 is an apocalyptic number.

It is an amenable number.

21012222313 is a deficient number, since it is larger than the sum of its proper divisors (833861527).

21012222313 is a wasteful number, since it uses less digits than its factorization.

21012222313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4876527.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21012222313 its reverse (31322221012), we get a palindrome (52334443325).

The spelling of 21012222313 in words is "twenty-one billion, twelve million, two hundred twenty-two thousand, three hundred thirteen".