10011221123213 has 4 divisors (see below), whose sum is σ = 10600116483420. Its totient is φ = 9422325763008.

The previous prime is 10011221123207. The next prime is 10011221123231. The reversal of 10011221123213 is 31232112211001.

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 8300927363689 + 1710293759524 = 2881133^2 + 1307782^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011221123213 - 2³⁸ = 9736343216269 is a prime.

It is a super-2 number, since 2×10011221123213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011221123273) 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, 294447680078 + ... + 294447680111.

It is an arithmetic number, because the mean of its divisors is an integer number (2650029120855).

Almost surely, 2^{10011221123213} is an apocalyptic number.

It is an amenable number.

10011221123213 is a deficient number, since it is larger than the sum of its proper divisors (588895360207).

10011221123213 is an equidigital number, since it uses as much as digits as its factorization.

10011221123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588895360206.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 10011221123213 its reverse (31232112211001), we get a palindrome (41243333334214).

The spelling of 10011221123213 in words is "ten trillion, eleven billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred thirteen".