21211011022213 has 4 divisors (see below), whose sum is σ = 22133228892768. Its totient is φ = 20288793151660.

The previous prime is 21211011022207. The next prime is 21211011022297. The reversal of 21211011022213 is 31222011011212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21211011022213 - 2⁹ = 21211011021701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211011922213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461108935243 + ... + 461108935288.

It is an arithmetic number, because the mean of its divisors is an integer number (5533307223192).

Almost surely, 2^{21211011022213} is an apocalyptic number.

21211011022213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21211011022213 is a deficient number, since it is larger than the sum of its proper divisors (922217870555).

21211011022213 is an equidigital number, since it uses as much as digits as its factorization.

21211011022213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922217870554.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21211011022213 its reverse (31222011011212), we get a palindrome (52433022033425).

The spelling of 21211011022213 in words is "twenty-one trillion, two hundred eleven billion, eleven million, twenty-two thousand, two hundred thirteen".