21020211001203 has 16 divisors (see below), whose sum is σ = 28236541146240. Its totient is φ = 13908734289216.

The previous prime is 21020211001187. The next prime is 21020211001213. The reversal of 21020211001203 is 30210011202012.

It is not a de Polignac number, because 21020211001203 - 2⁴ = 21020211001187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21020211001213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5626650 + ... + 8584847.

It is an arithmetic number, because the mean of its divisors is an integer number (1764783821640).

Almost surely, 2^{21020211001203} is an apocalyptic number.

21020211001203 is a deficient number, since it is larger than the sum of its proper divisors (7216330145037).

21020211001203 is a wasteful number, since it uses less digits than its factorization.

21020211001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215186.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21020211001203 its reverse (30210011202012), we get a palindrome (51230222203215).

The spelling of 21020211001203 in words is "twenty-one trillion, twenty billion, two hundred eleven million, one thousand, two hundred three".