21211123230000 has 300 divisors, whose sum is σ = 80921852974248. Its totient is φ = 5142090240000.

The previous prime is 21211123229993. The next prime is 21211123230049. The reversal of 21211123230000 is 3232111212.

21211123230000 is a `hidden beast` number, since 2 + 121 + 11 + 232 + 300 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9722689 + ... + 11702688.

Almost surely, 2^{21211123230000} is an apocalyptic number.

21211123230000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21211123230000 is an abundant number, since it is smaller than the sum of its proper divisors (59710729744248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211123230000 is a wasteful number, since it uses less digits than its factorization.

21211123230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425422 (or 21425398 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21211123230000 its reverse (3232111212), we get a palindrome (21214355341212).

The spelling of 21211123230000 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty-three million, two hundred thirty thousand".