21210220010103 has 8 divisors (see below), whose sum is σ = 28496173449216. Its totient is φ = 14032206622200.

The previous prime is 21210220010059. The next prime is 21210220010153. The reversal of 21210220010103 is 30101002201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21210220010103 - 2⁹ = 21210220009591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210220010153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26985012343 + ... + 26985013128.

It is an arithmetic number, because the mean of its divisors is an integer number (3562021681152).

Almost surely, 2^{21210220010103} is an apocalyptic number.

21210220010103 is a deficient number, since it is larger than the sum of its proper divisors (7285953439113).

21210220010103 is a wasteful number, since it uses less digits than its factorization.

21210220010103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53970025605.

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

Adding to 21210220010103 its reverse (30101002201212), we get a palindrome (51311222211315).

The spelling of 21210220010103 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty million, ten thousand, one hundred three".