120002221222001 has 4 divisors (see below), whose sum is σ = 121646087266212. Its totient is φ = 118358355177792.

The previous prime is 120002221221997. The next prime is 120002221222019. The reversal of 120002221222001 is 100222122200021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88469054828401 + 31533166393600 = 9405799^2 + 5615440^2 .

It is a cyclic number.

It is not a de Polignac number, because 120002221222001 - 2² = 120002221221997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120002221222201) 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, 821933021996 + ... + 821933022141.

It is an arithmetic number, because the mean of its divisors is an integer number (30411521816553).

Almost surely, 2^{120002221222001} is an apocalyptic number.

It is an amenable number.

120002221222001 is a deficient number, since it is larger than the sum of its proper divisors (1643866044211).

120002221222001 is an equidigital number, since it uses as much as digits as its factorization.

120002221222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643866044210.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120002221222001 its reverse (100222122200021), we get a palindrome (220224343422022).

The spelling of 120002221222001 in words is "one hundred twenty trillion, two billion, two hundred twenty-one million, two hundred twenty-two thousand, one".