21131232223030 has 8 divisors (see below), whose sum is σ = 38036218001472. Its totient is φ = 8452492889208.

The previous prime is 21131232223007. The next prime is 21131232223081. The reversal of 21131232223030 is 3032223213112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21131232222986 and 21131232223004.

It is a congruent number.

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, 1056561611142 + ... + 1056561611161.

It is an arithmetic number, because the mean of its divisors is an integer number (4754527250184).

Almost surely, 2^{21131232223030} is an apocalyptic number.

21131232223030 is a deficient number, since it is larger than the sum of its proper divisors (16904985778442).

21131232223030 is a wasteful number, since it uses less digits than its factorization.

21131232223030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113123222310.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21131232223030 its reverse (3032223213112), we get a palindrome (24163455436142).

The spelling of 21131232223030 in words is "twenty-one trillion, one hundred thirty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, thirty".