120001020102 has 32 divisors (see below), whose sum is σ = 266927708160. Its totient is φ = 39961523880.

The previous prime is 120001020091. The next prime is 120001020103. The reversal of 120001020102 is 201020100021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001020103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022038 + ... + 1133385.

It is an arithmetic number, because the mean of its divisors is an integer number (8341490880).

Almost surely, 2^120001020102 is an apocalyptic number.

120001020102 is an abundant number, since it is smaller than the sum of its proper divisors (146926688058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120001020102 is a wasteful number, since it uses less digits than its factorization.

120001020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156465 (or 2156459 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120001020102 its reverse (201020100021), we get a palindrome (321021120123).

The spelling of 120001020102 in words is "one hundred twenty billion, one million, twenty thousand, one hundred two".