20021210103 has 16 divisors (see below), whose sum is σ = 27039388896. Its totient is φ = 13176038400.

The previous prime is 20021210087. The next prime is 20021210147. The reversal of 20021210103 is 30101212002.

It is not a de Polignac number, because 20021210103 - 2⁴ = 20021210087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021215103) 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, 4075 + ... + 200147.

It is an arithmetic number, because the mean of its divisors is an integer number (1689961806).

Almost surely, 2^20021210103 is an apocalyptic number.

20021210103 is a deficient number, since it is larger than the sum of its proper divisors (7018178793).

20021210103 is a wasteful number, since it uses less digits than its factorization.

20021210103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196514.

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

Adding to 20021210103 its reverse (30101212002), we get a palindrome (50122422105).

The spelling of 20021210103 in words is "twenty billion, twenty-one million, two hundred ten thousand, one hundred three".