20212211221223 has 16 divisors (see below), whose sum is σ = 23340896921664. Its totient is φ = 17143879495680.

The previous prime is 20212211221219. The next prime is 20212211221333. The reversal of 20212211221223 is 32212211221202.

It is not a de Polignac number, because 20212211221223 - 2² = 20212211221219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212211221823) 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, 3180443 + ... + 7109123.

It is an arithmetic number, because the mean of its divisors is an integer number (1458806057604).

Almost surely, 2^{20212211221223} is an apocalyptic number.

20212211221223 is a deficient number, since it is larger than the sum of its proper divisors (3128685700441).

20212211221223 is an equidigital number, since it uses as much as digits as its factorization.

20212211221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936362.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20212211221223 its reverse (32212211221202), we get a palindrome (52424422442425).

The spelling of 20212211221223 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty-three".