21211120234 has 8 divisors (see below), whose sum is σ = 31817328768. Its totient is φ = 10605343980.

The previous prime is 21211120207. The next prime is 21211120253. The reversal of 21211120234 is 43202111212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80199 + ... + 221029.

It is an arithmetic number, because the mean of its divisors is an integer number (3977166096).

Almost surely, 2^21211120234 is an apocalyptic number.

21211120234 is a deficient number, since it is larger than the sum of its proper divisors (10606208534).

21211120234 is a wasteful number, since it uses less digits than its factorization.

21211120234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216140.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21211120234 its reverse (43202111212), we get a palindrome (64413231446).

The spelling of 21211120234 in words is "twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred thirty-four".