21021301103 has 8 divisors (see below), whose sum is σ = 23064887376. Its totient is φ = 18999808000.

The previous prime is 21021301087. The next prime is 21021301109. The reversal of 21021301103 is 30110312012.

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

It is a cyclic number.

It is not a de Polignac number, because 21021301103 - 2⁴ = 21021301087 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 (21021301109) 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, 5521298 + ... + 5525103.

It is an arithmetic number, because the mean of its divisors is an integer number (2883110922).

Almost surely, 2^21021301103 is an apocalyptic number.

21021301103 is a deficient number, since it is larger than the sum of its proper divisors (2043586273).

21021301103 is a wasteful number, since it uses less digits than its factorization.

21021301103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046585.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21021301103 its reverse (30110312012), we get a palindrome (51131613115).

The spelling of 21021301103 in words is "twenty-one billion, twenty-one million, three hundred one thousand, one hundred three".