21100223211 has 8 divisors (see below), whose sum is σ = 28893999504. Its totient is φ = 13686631200.

The previous prime is 21100223203. The next prime is 21100223219. The reversal of 21100223211 is 11232200112.

It is an interprime number because it is at equal distance from previous prime (21100223203) and next prime (21100223219).

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

It is not a de Polignac number, because 21100223211 - 2³ = 21100223203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100223219) 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, 95045940 + ... + 95046161.

It is an arithmetic number, because the mean of its divisors is an integer number (3611749938).

Almost surely, 2^21100223211 is an apocalyptic number.

21100223211 is a deficient number, since it is larger than the sum of its proper divisors (7793776293).

21100223211 is a wasteful number, since it uses less digits than its factorization.

21100223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190092141.

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

Adding to 21100223211 its reverse (11232200112), we get a palindrome (32332423323).

The spelling of 21100223211 in words is "twenty-one billion, one hundred million, two hundred twenty-three thousand, two hundred eleven".