121100012011 has 8 divisors (see below), whose sum is σ = 134601729264. Its totient is φ = 108013732320.

The previous prime is 121100012009. The next prime is 121100012021. The reversal of 121100012011 is 110210001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121100012011 - 2¹ = 121100012009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100012021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103858776 + ... + 103859941.

It is an arithmetic number, because the mean of its divisors is an integer number (16825216158).

Almost surely, 2^121100012011 is an apocalyptic number.

121100012011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121100012011 is a deficient number, since it is larger than the sum of its proper divisors (13501717253).

121100012011 is a wasteful number, since it uses less digits than its factorization.

121100012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207718781.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121100012011 its reverse (110210001121), we get a palindrome (231310013132).

The spelling of 121100012011 in words is "one hundred twenty-one billion, one hundred million, twelve thousand, eleven".