121201322103 has 12 divisors (see below), whose sum is σ = 175573101288. Its totient is φ = 80568023760.

The previous prime is 121201322089. The next prime is 121201322117. The reversal of 121201322103 is 301223102121.

It is an interprime number because it is at equal distance from previous prime (121201322089) and next prime (121201322117).

It is a de Polignac number, because none of the positive numbers 2^k-121201322103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201322153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19401508 + ... + 19407753.

It is an arithmetic number, because the mean of its divisors is an integer number (14631091774).

Almost surely, 2^121201322103 is an apocalyptic number.

121201322103 is a deficient number, since it is larger than the sum of its proper divisors (54371779185).

121201322103 is a wasteful number, since it uses less digits than its factorization.

121201322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38809614 (or 38809611 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121201322103 its reverse (301223102121), we get a palindrome (422424424224).

The spelling of 121201322103 in words is "one hundred twenty-one billion, two hundred one million, three hundred twenty-two thousand, one hundred three".