121320131311 has 8 divisors (see below), whose sum is σ = 129454791920. Its totient is φ = 113360409792.

The previous prime is 121320131267. The next prime is 121320131333. The reversal of 121320131311 is 113131023121.

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 121320131311 - 2¹⁹ = 121319607023 is a prime.

It is a super-2 number, since 2×121320131311² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320101311) 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, 43733340 + ... + 43736113.

It is an arithmetic number, because the mean of its divisors is an integer number (16181848990).

Almost surely, 2^121320131311 is an apocalyptic number.

121320131311 is a deficient number, since it is larger than the sum of its proper divisors (8134660609).

121320131311 is an equidigital number, since it uses as much as digits as its factorization.

121320131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87469545.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121320131311 its reverse (113131023121), we get a palindrome (234451154432).

The spelling of 121320131311 in words is "one hundred twenty-one billion, three hundred twenty million, one hundred thirty-one thousand, three hundred eleven".