121001020010011 has 4 divisors (see below), whose sum is σ = 127369494747400. Its totient is φ = 114632545272624.

The previous prime is 121001020009997. The next prime is 121001020010069. The reversal of 121001020010011 is 110010020100121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121001020010011 - 2¹⁷ = 121001019878939 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 121001020010011.

It is not an unprimeable number, because it can be changed into a prime (121001020010081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184237368666 + ... + 3184237368703.

It is an arithmetic number, because the mean of its divisors is an integer number (31842373686850).

Almost surely, 2^{121001020010011} is an apocalyptic number.

121001020010011 is a deficient number, since it is larger than the sum of its proper divisors (6368474737389).

121001020010011 is an equidigital number, since it uses as much as digits as its factorization.

121001020010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368474737388.

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

Adding to 121001020010011 its reverse (110010020100121), we get a palindrome (231011040110132).

The spelling of 121001020010011 in words is "one hundred twenty-one trillion, one billion, twenty million, ten thousand, eleven".