12021012021011 has 16 divisors (see below), whose sum is σ = 14316942566400. Its totient is φ = 10084496393160.

The previous prime is 12021012021001. The next prime is 12021012021037. The reversal of 12021012021011 is 11012021012021.

It is not a de Polignac number, because 12021012021011 - 2¹⁰ = 12021012019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021012021001) 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, 372820925 + ... + 372853166.

It is an arithmetic number, because the mean of its divisors is an integer number (894808910400).

Almost surely, 2^{12021012021011} is an apocalyptic number.

12021012021011 is a deficient number, since it is larger than the sum of its proper divisors (2295930545389).

12021012021011 is an frugal number, since it uses more digits than its factorization.

12021012021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745674159 (or 745674145 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12021012021011 its reverse (11012021012021), we get a palindrome (23033033033032).

The spelling of 12021012021011 in words is "twelve trillion, twenty-one billion, twelve million, twenty-one thousand, eleven".