21010011202213 has 4 divisors (see below), whose sum is σ = 22920012220608. Its totient is φ = 19100010183820.

The previous prime is 21010011202171. The next prime is 21010011202241. The reversal of 21010011202213 is 31220211001012.

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 a de Polignac number, because none of the positive numbers 2^k-21010011202213 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 (21010011202273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955000509181 + ... + 955000509202.

It is an arithmetic number, because the mean of its divisors is an integer number (5730003055152).

Almost surely, 2^{21010011202213} is an apocalyptic number.

It is an amenable number.

21010011202213 is a deficient number, since it is larger than the sum of its proper divisors (1910001018395).

21010011202213 is a wasteful number, since it uses less digits than its factorization.

21010011202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910001018394.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21010011202213 its reverse (31220211001012), we get a palindrome (52230222203225).

The spelling of 21010011202213 in words is "twenty-one trillion, ten billion, eleven million, two hundred two thousand, two hundred thirteen".