121201132113 has 64 divisors (see below), whose sum is σ = 184964290560. Its totient is φ = 79391249280.

The previous prime is 121201132099. The next prime is 121201132147. The reversal of 121201132113 is 311231102121.

It is not a de Polignac number, because 121201132113 - 2¹³ = 121201123921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201132313) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46776448 + ... + 46779038.

It is an arithmetic number, because the mean of its divisors is an integer number (2890067040).

Almost surely, 2^121201132113 is an apocalyptic number.

It is an amenable number.

121201132113 is a deficient number, since it is larger than the sum of its proper divisors (63763158447).

121201132113 is an frugal number, since it uses more digits than its factorization.

121201132113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978 (or 2960 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121201132113 its reverse (311231102121), we get a palindrome (432432234234).

The spelling of 121201132113 in words is "one hundred twenty-one billion, two hundred one million, one hundred thirty-two thousand, one hundred thirteen".