21120301012 has 12 divisors (see below), whose sum is σ = 36963249120. Its totient is φ = 10559372696.

The previous prime is 21120301009. The next prime is 21120301019. The reversal of 21120301012 is 21010302112.

It is a super-2 number, since 2×21120301012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120300983 and 21120301001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120301019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131062 + ... + 243757.

It is an arithmetic number, because the mean of its divisors is an integer number (3080270760).

Almost surely, 2^21120301012 is an apocalyptic number.

It is an amenable number.

21120301012 is a deficient number, since it is larger than the sum of its proper divisors (15842948108).

21120301012 is a wasteful number, since it uses less digits than its factorization.

21120301012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388910 (or 388908 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21120301012 its reverse (21010302112), we get a palindrome (42130603124).

The spelling of 21120301012 in words is "twenty-one billion, one hundred twenty million, three hundred one thousand, twelve".