121102001011 has 4 divisors (see below), whose sum is σ = 121102767000. Its totient is φ = 121101235024.

The previous prime is 121102000979. The next prime is 121102001017. The reversal of 121102001011 is 110100201121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110100201121 = 31 ⋅3551619391.

It is a cyclic number.

It is not a de Polignac number, because 121102001011 - 2⁵ = 121102000979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102001017) 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, 48421 + ... + 494518.

It is an arithmetic number, because the mean of its divisors is an integer number (30275691750).

Almost surely, 2^121102001011 is an apocalyptic number.

121102001011 is a deficient number, since it is larger than the sum of its proper divisors (765989).

121102001011 is an equidigital number, since it uses as much as digits as its factorization.

121102001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765988.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121102001011 its reverse (110100201121), we get a palindrome (231202202132).

The spelling of 121102001011 in words is "one hundred twenty-one billion, one hundred two million, one thousand, eleven".