121121011001101 has 4 divisors (see below), whose sum is σ = 121558270968892. Its totient is φ = 120683751033312.

The previous prime is 121121011001087. The next prime is 121121011001183. The reversal of 121121011001101 is 101100110121121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18809829220900 + 102311181780201 = 4337030^2 + 10114899^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121011001101 - 2⁷ = 121121011000973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121011001191) 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, 218629983480 + ... + 218629984033.

It is an arithmetic number, because the mean of its divisors is an integer number (30389567742223).

Almost surely, 2^{121121011001101} is an apocalyptic number.

It is an amenable number.

121121011001101 is a deficient number, since it is larger than the sum of its proper divisors (437259967791).

121121011001101 is an equidigital number, since it uses as much as digits as its factorization.

121121011001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437259967790.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121121011001101 its reverse (101100110121121), we get a palindrome (222221121122222).

The spelling of 121121011001101 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, eleven million, one thousand, one hundred one".