1012120002221 has 8 divisors (see below), whose sum is σ = 1028411812704. Its totient is φ = 995951149200.

The previous prime is 1012120002217. The next prime is 1012120002239. The reversal of 1012120002221 is 1222000212101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012120002221 - 2² = 1012120002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012120002196 and 1012120002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012120004221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30722771 + ... + 30755696.

It is an arithmetic number, because the mean of its divisors is an integer number (128551476588).

Almost surely, 2^{1012120002221} is an apocalyptic number.

It is an amenable number.

1012120002221 is a deficient number, since it is larger than the sum of its proper divisors (16291810483).

1012120002221 is a wasteful number, since it uses less digits than its factorization.

1012120002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61478731.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012120002221 its reverse (1222000212101), we get a palindrome (2234120214322).

The spelling of 1012120002221 in words is "one trillion, twelve billion, one hundred twenty million, two thousand, two hundred twenty-one".