121012320011 has 16 divisors (see below), whose sum is σ = 135222497280. Its totient is φ = 107350884480.

The previous prime is 121012319977. The next prime is 121012320029. The reversal of 121012320011 is 110023210121.

It is a cyclic number.

It is not a de Polignac number, because 121012320011 - 2³⁰ = 119938578187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012320511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173051 + ... + 521508.

It is an arithmetic number, because the mean of its divisors is an integer number (8451406080).

Almost surely, 2^121012320011 is an apocalyptic number.

121012320011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121012320011 is a deficient number, since it is larger than the sum of its proper divisors (14210177269).

121012320011 is a wasteful number, since it uses less digits than its factorization.

121012320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694954.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121012320011 its reverse (110023210121), we get a palindrome (231035530132).

The spelling of 121012320011 in words is "one hundred twenty-one billion, twelve million, three hundred twenty thousand, eleven".