21203000223012 has 120 divisors (see below), whose sum is σ = 58829426742240. Its totient is φ = 6636045208320.

The previous prime is 21203000223011. The next prime is 21203000223101. The reversal of 21203000223012 is 21032200030212.

21203000223012 is a `hidden beast` number, since 2 + 120 + 300 + 0 + 2 + 230 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21203000223011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2285814 + ... + 6901517.

It is an arithmetic number, because the mean of its divisors is an integer number (490245222852).

Almost surely, 2^{21203000223012} is an apocalyptic number.

It is an amenable number.

21203000223012 is an abundant number, since it is smaller than the sum of its proper divisors (37626426519228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21203000223012 is a wasteful number, since it uses less digits than its factorization.

21203000223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187783 (or 9187772 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21203000223012 its reverse (21032200030212), we get a palindrome (42235200253224).

The spelling of 21203000223012 in words is "twenty-one trillion, two hundred three billion, two hundred twenty-three thousand, twelve".