121000101011 has 16 divisors (see below), whose sum is σ = 132982947840. Its totient is φ = 109584446400.

The previous prime is 121000100989. The next prime is 121000101023. The reversal of 121000101011 is 110101000121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121000101011 - 2¹⁴ = 121000084627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121000101011.

It is not an unprimeable number, because it can be changed into a prime (121000101611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687086 + ... + 845036.

It is an arithmetic number, because the mean of its divisors is an integer number (8311434240).

Almost surely, 2^121000101011 is an apocalyptic number.

121000101011 is a deficient number, since it is larger than the sum of its proper divisors (11982846829).

121000101011 is a wasteful number, since it uses less digits than its factorization.

121000101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159746.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121000101011 its reverse (110101000121), we get a palindrome (231101101132).

The spelling of 121000101011 in words is "one hundred twenty-one billion, one hundred one thousand, eleven".