121120112121011 has 4 divisors (see below), whose sum is σ = 121120315457400. Its totient is φ = 121119908784624.

The previous prime is 121120112120929. The next prime is 121120112121023. The reversal of 121120112121011 is 110121211021121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120112121011 is a prime.

It is a super-2 number, since 2×121120112121011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121120112121061) 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, 100772066 + ... + 101966903.

It is an arithmetic number, because the mean of its divisors is an integer number (30280078864350).

Almost surely, 2^{121120112121011} is an apocalyptic number.

121120112121011 is a deficient number, since it is larger than the sum of its proper divisors (203336389).

121120112121011 is an equidigital number, since it uses as much as digits as its factorization.

121120112121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203336388.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121120112121011 its reverse (110121211021121), we get a palindrome (231241323142132).

The spelling of 121120112121011 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred twelve million, one hundred twenty-one thousand, eleven".