201021103 has 8 divisors (see below), whose sum is σ = 207286128. Its totient is φ = 194847744.

The previous prime is 201021101. The next prime is 201021113. The reversal of 201021103 is 301120102.

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 201021103 - 2¹ = 201021101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201021103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021101) 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, 18450 + ... + 27247.

It is an arithmetic number, because the mean of its divisors is an integer number (25910766).

Almost surely, 2^201021103 is an apocalyptic number.

201021103 is a deficient number, since it is larger than the sum of its proper divisors (6265025).

201021103 is an equidigital number, since it uses as much as digits as its factorization.

201021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45833.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201021103 is about 14178.1911046508. The cubic root of 201021103 is about 585.7970997858.

Adding to 201021103 its reverse (301120102), we get a palindrome (502141205).

The spelling of 201021103 in words is "two hundred one million, twenty-one thousand, one hundred three".