120102001011 has 6 divisors (see below), whose sum is σ = 173480668140. Its totient is φ = 80068000668.

The previous prime is 120102000989. The next prime is 120102001039. The reversal of 120102001011 is 110100201021.

It is a happy number.

It is not a de Polignac number, because 120102001011 - 2¹⁰ = 120101999987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13344666779 = 120102001011 / (1 + 2 + 0 + 1 + 0 + 2 + 0 + 0 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 120102000984 and 120102001002.

It is not an unprimeable number, because it can be changed into a prime (120102001051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6672333381 + ... + 6672333398.

It is an arithmetic number, because the mean of its divisors is an integer number (28913444690).

Almost surely, 2^120102001011 is an apocalyptic number.

120102001011 is a deficient number, since it is larger than the sum of its proper divisors (53378667129).

120102001011 is a wasteful number, since it uses less digits than its factorization.

120102001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344666785 (or 13344666782 counting only the distinct ones).

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

Adding to 120102001011 its reverse (110100201021), we get a palindrome (230202202032).

It can be divided in two parts, 12010 and 2001011, that added together give a triangular number (2013021 = T₂₀₀₆).

The spelling of 120102001011 in words is "one hundred twenty billion, one hundred two million, one thousand, eleven".