121101111211011 has 8 divisors (see below), whose sum is σ = 165832152289104. Its totient is φ = 78552072136800.

The previous prime is 121101111211001. The next prime is 121101111211037. The reversal of 121101111211011 is 110112111101121.

It is a happy number.

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

It is not a de Polignac number, because 121101111211011 - 2³⁸ = 120826233304067 is a prime.

It is a super-2 number, since 2×121101111211011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121101111211001) 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, 545500500840 + ... + 545500501061.

It is an arithmetic number, because the mean of its divisors is an integer number (20729019036138).

Almost surely, 2^{121101111211011} is an apocalyptic number.

121101111211011 is a deficient number, since it is larger than the sum of its proper divisors (44731041078093).

121101111211011 is a wasteful number, since it uses less digits than its factorization.

121101111211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091001001941.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 121101111211011 its reverse (110112111101121), we get a palindrome (231213222312132).

The spelling of 121101111211011 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred eleven million, two hundred eleven thousand, eleven".