20010212223 has 4 divisors (see below), whose sum is σ = 26680282968. Its totient is φ = 13340141480.

The previous prime is 20010212149. The next prime is 20010212293. The reversal of 20010212223 is 32221201002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20010212223 - 2³² = 15715244927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010212293) 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, 3335035368 + ... + 3335035373.

It is an arithmetic number, because the mean of its divisors is an integer number (6670070742).

Almost surely, 2^20010212223 is an apocalyptic number.

20010212223 is a deficient number, since it is larger than the sum of its proper divisors (6670070745).

20010212223 is an equidigital number, since it uses as much as digits as its factorization.

20010212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670070744.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20010212223 its reverse (32221201002), we get a palindrome (52231413225).

The spelling of 20010212223 in words is "twenty billion, ten million, two hundred twelve thousand, two hundred twenty-three".