21112010223 has 8 divisors (see below), whose sum is σ = 28150623408. Its totient is φ = 14074035264.

The previous prime is 21112010209. The next prime is 21112010233. The reversal of 21112010223 is 32201021112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21112010223 - 2⁴ = 21112010207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112010233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76140 + ... + 219137.

It is an arithmetic number, because the mean of its divisors is an integer number (3518827926).

Almost surely, 2^21112010223 is an apocalyptic number.

21112010223 is a deficient number, since it is larger than the sum of its proper divisors (7038613185).

21112010223 is a wasteful number, since it uses less digits than its factorization.

21112010223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319113.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21112010223 its reverse (32201021112), we get a palindrome (53313031335).

The spelling of 21112010223 in words is "twenty-one billion, one hundred twelve million, ten thousand, two hundred twenty-three".