10211221111223 has 16 divisors (see below), whose sum is σ = 11254202249472. Its totient is φ = 9187459464000.

The previous prime is 10211221111193. The next prime is 10211221111249. The reversal of 10211221111223 is 32211112211201.

It is a cyclic number.

It is not a de Polignac number, because 10211221111223 - 2¹⁴ = 10211221094839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211221111195 and 10211221111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211221101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668513 + ... + 4568298.

It is an arithmetic number, because the mean of its divisors is an integer number (703387640592).

Almost surely, 2^{10211221111223} is an apocalyptic number.

10211221111223 is a deficient number, since it is larger than the sum of its proper divisors (1042981138249).

10211221111223 is a wasteful number, since it uses less digits than its factorization.

10211221111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238646.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 10211221111223 its reverse (32211112211201), we get a palindrome (42422333322424).

The spelling of 10211221111223 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-three".