21120010031230 has 32 divisors (see below), whose sum is σ = 41475227192928. Its totient is φ = 7679409667200.

The previous prime is 21120010031221. The next prime is 21120010031243. The reversal of 21120010031230 is 3213001002112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5994777 + ... + 8841796.

It is an arithmetic number, because the mean of its divisors is an integer number (1296100849779).

Almost surely, 2^{21120010031230} is an apocalyptic number.

21120010031230 is a deficient number, since it is larger than the sum of its proper divisors (20355217161698).

21120010031230 is a wasteful number, since it uses less digits than its factorization.

21120010031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14849532.

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

Adding to 21120010031230 its reverse (3213001002112), we get a palindrome (24333011033342).

The spelling of 21120010031230 in words is "twenty-one trillion, one hundred twenty billion, ten million, thirty-one thousand, two hundred thirty".