12020111002221 has 16 divisors (see below), whose sum is σ = 18394970615424. Its totient is φ = 6839155736064.

The previous prime is 12020111002187. The next prime is 12020111002223. The reversal of 12020111002221 is 12220011102021.

It is not a de Polignac number, because 12020111002221 - 2¹⁴ = 12020110985837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12020111002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020111002223) 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, 1228291756 + ... + 1228301541.

It is an arithmetic number, because the mean of its divisors is an integer number (1149685663464).

Almost surely, 2^{12020111002221} is an apocalyptic number.

It is an amenable number.

12020111002221 is a deficient number, since it is larger than the sum of its proper divisors (6374859613203).

12020111002221 is a wasteful number, since it uses less digits than its factorization.

12020111002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456593540.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12020111002221 its reverse (12220011102021), we get a palindrome (24240122104242).

The spelling of 12020111002221 in words is "twelve trillion, twenty billion, one hundred eleven million, two thousand, two hundred twenty-one".