120011111002221 has 4 divisors (see below), whose sum is σ = 160014814669632. Its totient is φ = 80007407334812.

The previous prime is 120011111002199. The next prime is 120011111002229. The reversal of 120011111002221 is 122200111110021.

It is a happy number.

120011111002221 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120011111002221 - 2¹⁷ = 120011110871149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120011111002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011111002229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20001851833701 + ... + 20001851833706.

It is an arithmetic number, because the mean of its divisors is an integer number (40003703667408).

Almost surely, 2^{120011111002221} is an apocalyptic number.

It is an amenable number.

120011111002221 is a deficient number, since it is larger than the sum of its proper divisors (40003703667411).

120011111002221 is an equidigital number, since it uses as much as digits as its factorization.

120011111002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40003703667410.

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

Adding to 120011111002221 its reverse (122200111110021), we get a palindrome (242211222112242).

The spelling of 120011111002221 in words is "one hundred twenty trillion, eleven billion, one hundred eleven million, two thousand, two hundred twenty-one".