120000200111001 has 64 divisors (see below), whose sum is σ = 204202190438400. Its totient is φ = 68225196621888.

The previous prime is 120000200110991. The next prime is 120000200111053. The reversal of 120000200111001 is 100111002000021.

It is a happy number.

It is not a de Polignac number, because 120000200111001 - 2⁷ = 120000200110873 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (120000202111001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73327255 + ... + 74945891.

It is an arithmetic number, because the mean of its divisors is an integer number (3190659225600).

Almost surely, 2^{120000200111001} is an apocalyptic number.

It is an amenable number.

120000200111001 is a deficient number, since it is larger than the sum of its proper divisors (84201990327399).

120000200111001 is a wasteful number, since it uses less digits than its factorization.

120000200111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620635 (or 1620629 counting only the distinct ones).

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

Adding to 120000200111001 its reverse (100111002000021), we get a palindrome (220111202111022).

The spelling of 120000200111001 in words is "one hundred twenty trillion, two hundred million, one hundred eleven thousand, one".