20101204223 has 16 divisors (see below), whose sum is σ = 22171622400. Its totient is φ = 18138970080.

The previous prime is 20101204213. The next prime is 20101204247. The reversal of 20101204223 is 32240210102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101204223 is a prime.

It is a super-2 number, since 2×20101204223² (a number of 21 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 (20101204213) 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, 8213 + ... + 200673.

It is an arithmetic number, because the mean of its divisors is an integer number (1385726400).

Almost surely, 2^20101204223 is an apocalyptic number.

20101204223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20101204223 is a deficient number, since it is larger than the sum of its proper divisors (2070418177).

20101204223 is a wasteful number, since it uses less digits than its factorization.

20101204223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192742.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20101204223 its reverse (32240210102), we get a palindrome (52341414325).

The spelling of 20101204223 in words is "twenty billion, one hundred one million, two hundred four thousand, two hundred twenty-three".