121210200011 has 4 divisors (see below), whose sum is σ = 121211913024. Its totient is φ = 121208487000.

The previous prime is 121210199993. The next prime is 121210200019. The reversal of 121210200011 is 110002012121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110002012121 = 47 ⋅2340468343.

It is a cyclic number.

It is not a de Polignac number, because 121210200011 - 2²² = 121206005707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210199965 and 121210200001.

It is not an unprimeable number, because it can be changed into a prime (121210200019) 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, 745580 + ... + 893481.

It is an arithmetic number, because the mean of its divisors is an integer number (30302978256).

Almost surely, 2^121210200011 is an apocalyptic number.

121210200011 is a deficient number, since it is larger than the sum of its proper divisors (1713013).

121210200011 is an equidigital number, since it uses as much as digits as its factorization.

121210200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713012.

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

Adding to 121210200011 its reverse (110002012121), we get a palindrome (231212212132).

The spelling of 121210200011 in words is "one hundred twenty-one billion, two hundred ten million, two hundred thousand, eleven".