12121101021011 has 8 divisors (see below), whose sum is σ = 12238908225024. Its totient is φ = 12003296252040.

The previous prime is 12121101020983. The next prime is 12121101021067. The reversal of 12121101021011 is 11012010112121.

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

It is a cyclic number.

It is not a de Polignac number, because 12121101021011 - 2¹⁰ = 12121101019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121101021511) 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, 10348940 + ... + 11460486.

It is an arithmetic number, because the mean of its divisors is an integer number (1529863528128).

Almost surely, 2^{12121101021011} is an apocalyptic number.

12121101021011 is a deficient number, since it is larger than the sum of its proper divisors (117807204013).

12121101021011 is a wasteful number, since it uses less digits than its factorization.

12121101021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217521.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12121101021011 its reverse (11012010112121), we get a palindrome (23133111133132).

The spelling of 12121101021011 in words is "twelve trillion, one hundred twenty-one billion, one hundred one million, twenty-one thousand, eleven".