12021102121011 has 32 divisors (see below), whose sum is σ = 16764795970560. Its totient is φ = 7647399408000.

The previous prime is 12021102120991. The next prime is 12021102121019. The reversal of 12021102121011 is 11012120112021.

It is a happy number.

It is not a de Polignac number, because 12021102121011 - 2¹⁵ = 12021102088243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021102121019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566461381 + ... + 566482601.

It is an arithmetic number, because the mean of its divisors is an integer number (523899874080).

Almost surely, 2^{12021102121011} is an apocalyptic number.

12021102121011 is a deficient number, since it is larger than the sum of its proper divisors (4743693849549).

12021102121011 is a wasteful number, since it uses less digits than its factorization.

12021102121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40387.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12021102121011 its reverse (11012120112021), we get a palindrome (23033222233032).

The spelling of 12021102121011 in words is "twelve trillion, twenty-one billion, one hundred two million, one hundred twenty-one thousand, eleven".