120020111000001 has 12 divisors (see below), whose sum is σ = 178954717477120. Its totient is φ = 77432329677240.

The previous prime is 120020110999963. The next prime is 120020111000057. The reversal of 120020111000001 is 100000111020021.

It is a happy number.

It is not a de Polignac number, because 120020111000001 - 2²⁷ = 120019976782273 is a prime.

It is a super-2 number, since 2×120020111000001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120020111005001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215089804381 + ... + 215089804938.

Almost surely, 2^{120020111000001} is an apocalyptic number.

It is an amenable number.

120020111000001 is a deficient number, since it is larger than the sum of its proper divisors (58934606477119).

120020111000001 is a wasteful number, since it uses less digits than its factorization.

120020111000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430179609356 (or 430179609353 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120020111000001 its reverse (100000111020021), we get a palindrome (220020222020022).

The spelling of 120020111000001 in words is "one hundred twenty trillion, twenty billion, one hundred eleven million, one", and thus it is an aban number.