121002101011001 has 32 divisors (see below), whose sum is σ = 138837977644800. Its totient is φ = 103304419117056.

The previous prime is 121002101010929. The next prime is 121002101011037. The reversal of 121002101011001 is 100110101200121.

It is a cyclic number.

It is not a de Polignac number, because 121002101011001 - 2¹⁸ = 121002100748857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121002101011501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9277161386 + ... + 9277174428.

It is an arithmetic number, because the mean of its divisors is an integer number (4338686801400).

Almost surely, 2^{121002101011001} is an apocalyptic number.

It is an amenable number.

121002101011001 is a deficient number, since it is larger than the sum of its proper divisors (17835876633799).

121002101011001 is a wasteful number, since it uses less digits than its factorization.

121002101011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17313.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121002101011001 its reverse (100110101200121), we get a palindrome (221112202211122).

The spelling of 121002101011001 in words is "one hundred twenty-one trillion, two billion, one hundred one million, eleven thousand, one".