121113331111221 has 64 divisors (see below), whose sum is σ = 174142620672000. Its totient is φ = 74642132940480.

The previous prime is 121113331111211. The next prime is 121113331111303. The reversal of 121113331111221 is 122111133311121.

It is a de Polignac number, because none of the positive numbers 2^k-121113331111221 is a prime.

It is a super-3 number, since 3×121113331111221³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121113331111191 and 121113331111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113331111211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 268710576 + ... + 269160918.

It is an arithmetic number, because the mean of its divisors is an integer number (2720978448000).

Almost surely, 2^{121113331111221} is an apocalyptic number.

It is an amenable number.

121113331111221 is a deficient number, since it is larger than the sum of its proper divisors (53029289560779).

121113331111221 is a wasteful number, since it uses less digits than its factorization.

121113331111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451014.

The product of its digits is 216, while the sum is 24.

Adding to 121113331111221 its reverse (122111133311121), we get a palindrome (243224464422342).

The spelling of 121113331111221 in words is "one hundred twenty-one trillion, one hundred thirteen billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twenty-one".