121110121001 has 8 divisors (see below), whose sum is σ = 125327353800. Its totient is φ = 116895623040.

The previous prime is 121110120997. The next prime is 121110121057. The reversal of 121110121001 is 100121011121.

It can be written as a sum of positive squares in 4 ways, for example, as 59792475625 + 61317645376 = 244525^2 + 247624^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121110121001 - 2² = 121110120997 is a prime.

It is a super-2 number, since 2×121110121001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121110121061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593396 + ... + 770933.

It is an arithmetic number, because the mean of its divisors is an integer number (15665919225).

Almost surely, 2^121110121001 is an apocalyptic number.

It is an amenable number.

121110121001 is a deficient number, since it is larger than the sum of its proper divisors (4217232799).

121110121001 is a wasteful number, since it uses less digits than its factorization.

121110121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367419.

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

Adding to 121110121001 its reverse (100121011121), we get a palindrome (221231132122).

The spelling of 121110121001 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, one".