121000011 has 16 divisors (see below), whose sum is σ = 176252160. Its totient is φ = 73228320.

The previous prime is 121000003. The next prime is 121000049. The reversal of 121000011 is 110000121.

It is not a de Polignac number, because 121000011 - 2³ = 121000003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25146 + ... + 29568.

It is an arithmetic number, because the mean of its divisors is an integer number (11015760).

Almost surely, 2^121000011 is an apocalyptic number.

121000011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000011 is a deficient number, since it is larger than the sum of its proper divisors (55252149).

121000011 is a wasteful number, since it uses less digits than its factorization.

121000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266.

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

The square root of 121000011 is about 11000.0005000000. Note that the first 3 decimals coincide. The cubic root of 121000011 is about 494.6087593130.

Adding to 121000011 its reverse (110000121), we get a palindrome (231000132).

It can be divided in two parts, 1 and 21000011, that added together give a palindrome (21000012).

The spelling of 121000011 in words is "one hundred twenty-one million, eleven", and thus it is an aban number.