21130223011 has 8 divisors (see below), whose sum is σ = 21585271104. Its totient is φ = 20675402880.

The previous prime is 21130222999. The next prime is 21130223063. The reversal of 21130223011 is 11032203112.

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

It is a cyclic number.

It is not a de Polignac number, because 21130223011 - 2⁵ = 21130222979 is a prime.

It is a super-2 number, since 2×21130223011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130223111) 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, 137451 + ... + 247291.

It is an arithmetic number, because the mean of its divisors is an integer number (2698158888).

Almost surely, 2^21130223011 is an apocalyptic number.

21130223011 is a deficient number, since it is larger than the sum of its proper divisors (455048093).

21130223011 is a wasteful number, since it uses less digits than its factorization.

21130223011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113981.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21130223011 its reverse (11032203112), we get a palindrome (32162426123).

The spelling of 21130223011 in words is "twenty-one billion, one hundred thirty million, two hundred twenty-three thousand, eleven".