121000010011 has 4 divisors (see below), whose sum is σ = 121010812272. Its totient is φ = 120989207752.

The previous prime is 121000010009. The next prime is 121000010029. The reversal of 121000010011 is 110010000121.

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 121000010011 - 2¹ = 121000010009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000009976 and 121000010003.

It is not an unprimeable number, because it can be changed into a prime (121000010041) 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, 5384311 + ... + 5406736.

It is an arithmetic number, because the mean of its divisors is an integer number (30252703068).

Almost surely, 2^121000010011 is an apocalyptic number.

121000010011 is a deficient number, since it is larger than the sum of its proper divisors (10802261).

121000010011 is a wasteful number, since it uses less digits than its factorization.

121000010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10802260.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 121000010011 its reverse (110010000121), we get a palindrome (231010010132).

The spelling of 121000010011 in words is "one hundred twenty-one billion, ten thousand, eleven".