121100112220011 has 4 divisors (see below), whose sum is σ = 161466816293352. Its totient is φ = 80733408146672.

The previous prime is 121100112220007. The next prime is 121100112220033. The reversal of 121100112220011 is 110022211001121.

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 121100112220011 - 2² = 121100112220007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121100112220001) 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, 20183352036666 + ... + 20183352036671.

It is an arithmetic number, because the mean of its divisors is an integer number (40366704073338).

Almost surely, 2^{121100112220011} is an apocalyptic number.

121100112220011 is a deficient number, since it is larger than the sum of its proper divisors (40366704073341).

121100112220011 is an equidigital number, since it uses as much as digits as its factorization.

121100112220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40366704073340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121100112220011 its reverse (110022211001121), we get a palindrome (231122323221132).

The spelling of 121100112220011 in words is "one hundred twenty-one trillion, one hundred billion, one hundred twelve million, two hundred twenty thousand, eleven".