121001111011 has 8 divisors (see below), whose sum is σ = 132875394048. Its totient is φ = 109272525000.

The previous prime is 121001110973. The next prime is 121001111029. The reversal of 121001111011 is 110111100121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001111011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001111041) 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, 36422515 + ... + 36425836.

It is an arithmetic number, because the mean of its divisors is an integer number (16609424256).

Almost surely, 2^121001111011 is an apocalyptic number.

121001111011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121001111011 is a deficient number, since it is larger than the sum of its proper divisors (11874283037).

121001111011 is a wasteful number, since it uses less digits than its factorization.

121001111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72848513.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 121001111011 its reverse (110111100121), we get a palindrome (231112211132).

The spelling of 121001111011 in words is "one hundred twenty-one billion, one million, one hundred eleven thousand, eleven".