201021212103 has 8 divisors (see below), whose sum is σ = 268050969600. Its totient is φ = 134002798008.

The previous prime is 201021212101. The next prime is 201021212167. The reversal of 201021212103 is 301212120102.

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

It is not a de Polignac number, because 201021212103 - 2¹ = 201021212101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021212101) 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, 2794413 + ... + 2865446.

It is an arithmetic number, because the mean of its divisors is an integer number (33506371200).

Almost surely, 2^201021212103 is an apocalyptic number.

201021212103 is a deficient number, since it is larger than the sum of its proper divisors (67029757497).

201021212103 is a wasteful number, since it uses less digits than its factorization.

201021212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671701.

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

Adding to 201021212103 its reverse (301212120102), we get a palindrome (502233332205).

The spelling of 201021212103 in words is "two hundred one billion, twenty-one million, two hundred twelve thousand, one hundred three".