121133031311 has 4 divisors (see below), whose sum is σ = 121160311824. Its totient is φ = 121105750800.

The previous prime is 121133031263. The next prime is 121133031337. The reversal of 121133031311 is 113130331121.

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

It is a cyclic number.

It is not a de Polignac number, because 121133031311 - 2¹⁰ = 121133030287 is a prime.

It is a super-2 number, since 2×121133031311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121133034311) 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, 13633595 + ... + 13642476.

It is an arithmetic number, because the mean of its divisors is an integer number (30290077956).

Almost surely, 2^121133031311 is an apocalyptic number.

121133031311 is a deficient number, since it is larger than the sum of its proper divisors (27280513).

121133031311 is an equidigital number, since it uses as much as digits as its factorization.

121133031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27280512.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 121133031311 its reverse (113130331121), we get a palindrome (234263362432).

The spelling of 121133031311 in words is "one hundred twenty-one billion, one hundred thirty-three million, thirty-one thousand, three hundred eleven".