121201210100011 has 4 divisors (see below), whose sum is σ = 121224379902624. Its totient is φ = 121178040297400.

The previous prime is 121201210099987. The next prime is 121201210100063. The reversal of 121201210100011 is 110001012102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121201210100011 - 2¹⁵ = 121201210067243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121201210099964 and 121201210100000.

It is not an unprimeable number, because it can be changed into a prime (121201210103011) 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, 11584893460 + ... + 11584903921.

It is an arithmetic number, because the mean of its divisors is an integer number (30306094975656).

Almost surely, 2^{121201210100011} is an apocalyptic number.

121201210100011 is a deficient number, since it is larger than the sum of its proper divisors (23169802613).

121201210100011 is an equidigital number, since it uses as much as digits as its factorization.

121201210100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23169802612.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121201210100011 its reverse (110001012102121), we get a palindrome (231202222202132).

The spelling of 121201210100011 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred ten million, one hundred thousand, eleven".