21120223001203 has 4 divisors (see below), whose sum is σ = 21120273253480. Its totient is φ = 21120172748928.

The previous prime is 21120223001179. The next prime is 21120223001219. The reversal of 21120223001203 is 30210032202112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21120223001203 - 2¹³ = 21120222993011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120223001803) 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, 24490350 + ... + 25338067.

It is an arithmetic number, because the mean of its divisors is an integer number (5280068313370).

Almost surely, 2^{21120223001203} is an apocalyptic number.

21120223001203 is a deficient number, since it is larger than the sum of its proper divisors (50252277).

21120223001203 is an equidigital number, since it uses as much as digits as its factorization.

21120223001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50252276.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21120223001203 its reverse (30210032202112), we get a palindrome (51330255203315).

The spelling of 21120223001203 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-three million, one thousand, two hundred three".