1002000120111 has 12 divisors (see below), whose sum is σ = 1447349089992. Its totient is φ = 667992887856.

The previous prime is 1002000120041. The next prime is 1002000120119. The reversal of 1002000120111 is 1110210002001.

It is a happy number.

It is not a de Polignac number, because 1002000120111 - 2¹³ = 1002000111919 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 = 1002000120093 and 1002000120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002000120119) 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, 364585 + ... + 1461821.

It is an arithmetic number, because the mean of its divisors is an integer number (120612424166).

Almost surely, 2^{1002000120111} is an apocalyptic number.

1002000120111 is a deficient number, since it is larger than the sum of its proper divisors (445348969881).

1002000120111 is a wasteful number, since it uses less digits than its factorization.

1002000120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198710 (or 1198707 counting only the distinct ones).

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

Adding to 1002000120111 its reverse (1110210002001), we get a palindrome (2112210122112).

The spelling of 1002000120111 in words is "one trillion, two billion, one hundred twenty thousand, one hundred eleven".