21012000011230 has 32 divisors (see below), whose sum is σ = 38380588577280. Its totient is φ = 8280742609440.

The previous prime is 21012000011221. The next prime is 21012000011243. The reversal of 21012000011230 is 3211000021012.

It is a super-2 number, since 2×21012000011230² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21012000011230.

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, 9106114 + ... + 11177893.

It is an arithmetic number, because the mean of its divisors is an integer number (1199393393040).

Almost surely, 2^{21012000011230} is an apocalyptic number.

21012000011230 is a deficient number, since it is larger than the sum of its proper divisors (17368588566050).

21012000011230 is a wasteful number, since it uses less digits than its factorization.

21012000011230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20285544.

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

Adding to 21012000011230 its reverse (3211000021012), we get a palindrome (24223000032242).

The spelling of 21012000011230 in words is "twenty-one trillion, twelve billion, eleven thousand, two hundred thirty".