121100210012011 has 4 divisors (see below), whose sum is σ = 125276079322800. Its totient is φ = 116924340701224.

The previous prime is 121100210012009. The next prime is 121100210012027. The reversal of 121100210012011 is 110210012001121.

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 121100210012011 - 2¹ = 121100210012009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100210011982 and 121100210012000.

It is not an unprimeable number, because it can be changed into a prime (121100210019011) 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, 2087934655351 + ... + 2087934655408.

It is an arithmetic number, because the mean of its divisors is an integer number (31319019830700).

Almost surely, 2^{121100210012011} is an apocalyptic number.

121100210012011 is a deficient number, since it is larger than the sum of its proper divisors (4175869310789).

121100210012011 is an equidigital number, since it uses as much as digits as its factorization.

121100210012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175869310788.

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

Adding to 121100210012011 its reverse (110210012001121), we get a palindrome (231310222013132).

The spelling of 121100210012011 in words is "one hundred twenty-one trillion, one hundred billion, two hundred ten million, twelve thousand, eleven".