121100273011 has 4 divisors (see below), whose sum is σ = 122211284800. Its totient is φ = 119989261224.

The previous prime is 121100273009. The next prime is 121100273027. The reversal of 121100273011 is 110372001121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110372001121 = 66569 ⋅1658009.

It is a cyclic number.

It is not a de Polignac number, because 121100273011 - 2¹ = 121100273009 is a prime.

It is a super-2 number, since 2×121100273011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121100273011.

It is not an unprimeable number, because it can be changed into a prime (121100273081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555505731 + ... + 555505948.

It is an arithmetic number, because the mean of its divisors is an integer number (30552821200).

Almost surely, 2^121100273011 is an apocalyptic number.

121100273011 is a deficient number, since it is larger than the sum of its proper divisors (1111011789).

121100273011 is a wasteful number, since it uses less digits than its factorization.

121100273011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111011788.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 121100273011 its reverse (110372001121), we get a palindrome (231472274132).

The spelling of 121100273011 in words is "one hundred twenty-one billion, one hundred million, two hundred seventy-three thousand, eleven".