21120302001 has 32 divisors (see below), whose sum is σ = 29252699136. Its totient is φ = 13543200000.

The previous prime is 21120301991. The next prime is 21120302059. The reversal of 21120302001 is 10020302112.

It is not a de Polignac number, because 21120302001 - 2²⁵ = 21086747569 is a prime.

It is a super-2 number, since 2×21120302001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120302501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11109151 + ... + 11111051.

It is an arithmetic number, because the mean of its divisors is an integer number (914146848).

Almost surely, 2^21120302001 is an apocalyptic number.

It is an amenable number.

21120302001 is a deficient number, since it is larger than the sum of its proper divisors (8132397135).

21120302001 is a wasteful number, since it uses less digits than its factorization.

21120302001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21120302001 its reverse (10020302112), we get a palindrome (31140604113).

The spelling of 21120302001 in words is "twenty-one billion, one hundred twenty million, three hundred two thousand, one".