1000120200111 has 64 divisors (see below), whose sum is σ = 1565585280000. Its totient is φ = 629252582400.

The previous prime is 1000120200097. The next prime is 1000120200127. The reversal of 1000120200111 is 1110020210001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1000120200111 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000120200093 and 1000120200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000120200161) 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, 155078215 + ... + 155084663.

It is an arithmetic number, because the mean of its divisors is an integer number (24462270000).

Almost surely, 2^{1000120200111} is an apocalyptic number.

1000120200111 is a deficient number, since it is larger than the sum of its proper divisors (565465079889).

1000120200111 is a wasteful number, since it uses less digits than its factorization.

1000120200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7581 (or 7575 counting only the distinct ones).

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

Adding to 1000120200111 its reverse (1110020210001), we get a palindrome (2110140410112).

The spelling of 1000120200111 in words is "one trillion, one hundred twenty million, two hundred thousand, one hundred eleven".