210021010103 has 4 divisors (see below), whose sum is σ = 210026868288. Its totient is φ = 210015151920.

The previous prime is 210021010097. The next prime is 210021010117. The reversal of 210021010103 is 301010120012.

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 210021010103 - 2⁶ = 210021010039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021010603) 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, 2874983 + ... + 2947128.

It is an arithmetic number, because the mean of its divisors is an integer number (52506717072).

Almost surely, 2^210021010103 is an apocalyptic number.

210021010103 is a deficient number, since it is larger than the sum of its proper divisors (5858185).

210021010103 is an equidigital number, since it uses as much as digits as its factorization.

210021010103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858184.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 210021010103 its reverse (301010120012), we get a palindrome (511031130115).

The spelling of 210021010103 in words is "two hundred ten billion, twenty-one million, ten thousand, one hundred three".