121011143311 has 16 divisors (see below), whose sum is σ = 127235047104. Its totient is φ = 114870438144.

The previous prime is 121011143269. The next prime is 121011143321. The reversal of 121011143311 is 113341110121.

It is a cyclic number.

It is not a de Polignac number, because 121011143311 - 2³⁵ = 86651404943 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 (121011143321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765171 + ... + 1832443.

It is an arithmetic number, because the mean of its divisors is an integer number (7952190444).

Almost surely, 2^121011143311 is an apocalyptic number.

121011143311 is a deficient number, since it is larger than the sum of its proper divisors (6223903793).

121011143311 is a wasteful number, since it uses less digits than its factorization.

121011143311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67890.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121011143311 its reverse (113341110121), we get a palindrome (234352253432).

The spelling of 121011143311 in words is "one hundred twenty-one billion, eleven million, one hundred forty-three thousand, three hundred eleven".