201221012103 has 8 divisors (see below), whose sum is σ = 274534094208. Its totient is φ = 131027635704.

The previous prime is 201221012093. The next prime is 201221012117. The reversal of 201221012103 is 301210122102.

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

It is not a de Polignac number, because 201221012103 - 2¹⁴ = 201220995719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779926275 + ... + 779926532.

It is an arithmetic number, because the mean of its divisors is an integer number (34316761776).

Almost surely, 2^201221012103 is an apocalyptic number.

201221012103 is a deficient number, since it is larger than the sum of its proper divisors (73313082105).

201221012103 is a wasteful number, since it uses less digits than its factorization.

201221012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559852853.

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

Adding to 201221012103 its reverse (301210122102), we get a palindrome (502431134205).

The spelling of 201221012103 in words is "two hundred one billion, two hundred twenty-one million, twelve thousand, one hundred three".