121012200011 has 4 divisors (see below), whose sum is σ = 121019089800. Its totient is φ = 121005310224.

The previous prime is 121012199969. The next prime is 121012200031. The reversal of 121012200011 is 110002210121.

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 121012200011 - 2⁶ = 121012199947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012199965 and 121012200001.

It is not an unprimeable number, because it can be changed into a prime (121012200031) 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, 3418481 + ... + 3453698.

It is an arithmetic number, because the mean of its divisors is an integer number (30254772450).

Almost surely, 2^121012200011 is an apocalyptic number.

121012200011 is a deficient number, since it is larger than the sum of its proper divisors (6889789).

121012200011 is an equidigital number, since it uses as much as digits as its factorization.

121012200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121012200011 its reverse (110002210121), we get a palindrome (231014410132).

The spelling of 121012200011 in words is "one hundred twenty-one billion, twelve million, two hundred thousand, eleven".