121000000011 has 16 divisors (see below), whose sum is σ = 176115634560. Its totient is φ = 73285152320.

The previous prime is 120999999959. The next prime is 121000000021. The reversal of 121000000011 is 110000000121.

It is a cyclic number.

It is not a de Polignac number, because 121000000011 - 2⁹ = 120999999499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1153506 + ... + 1254023.

It is an arithmetic number, because the mean of its divisors is an integer number (11007227160).

Almost surely, 2^121000000011 is an apocalyptic number.

121000000011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000000011 is a deficient number, since it is larger than the sum of its proper divisors (55115634549).

121000000011 is a wasteful number, since it uses less digits than its factorization.

121000000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409066.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 121000000011 its reverse (110000000121), we get a palindrome (231000000132).

It can be divided in two parts, 1 and 21000000011, that added together give a palindrome (21000000012).

The spelling of 121000000011 in words is "one hundred twenty-one billion, eleven", and thus it is an aban number.