121201022100013 has 4 divisors (see below), whose sum is σ = 125110732490368. Its totient is φ = 117291311709660.

The previous prime is 121201022099957. The next prime is 121201022100023. The reversal of 121201022100013 is 310001220102121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121201022100013 - 2³³ = 121192432165421 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 121201022100013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201022100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954855195131 + ... + 1954855195192.

It is an arithmetic number, because the mean of its divisors is an integer number (31277683122592).

Almost surely, 2^{121201022100013} is an apocalyptic number.

It is an amenable number.

121201022100013 is a deficient number, since it is larger than the sum of its proper divisors (3909710390355).

121201022100013 is an equidigital number, since it uses as much as digits as its factorization.

121201022100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909710390354.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121201022100013 its reverse (310001220102121), we get a palindrome (431202242202134).

The spelling of 121201022100013 in words is "one hundred twenty-one trillion, two hundred one billion, twenty-two million, one hundred thousand, thirteen".