10221111021223 has 4 divisors (see below), whose sum is σ = 10241431321968. Its totient is φ = 10200790720480.

The previous prime is 10221111021203. The next prime is 10221111021301. The reversal of 10221111021223 is 32212011112201.

10221111021223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221111021223 is a prime.

It is a super-2 number, since 2×10221111021223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221111021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221111021203) 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, 10160149618 + ... + 10160150623.

It is an arithmetic number, because the mean of its divisors is an integer number (2560357830492).

Almost surely, 2^{10221111021223} is an apocalyptic number.

10221111021223 is a deficient number, since it is larger than the sum of its proper divisors (20320300745).

10221111021223 is an equidigital number, since it uses as much as digits as its factorization.

10221111021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20320300744.

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

Adding to 10221111021223 its reverse (32212011112201), we get a palindrome (42433122133424).

The spelling of 10221111021223 in words is "ten trillion, two hundred twenty-one billion, one hundred eleven million, twenty-one thousand, two hundred twenty-three".