1200120102 has 48 divisors (see below), whose sum is σ = 2672862192. Its totient is φ = 388938240.

The previous prime is 1200120037. The next prime is 1200120107. The reversal of 1200120102 is 2010210021.

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 (1200120107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223918 + ... + 229214.

It is an arithmetic number, because the mean of its divisors is an integer number (55684629).

Almost surely, 2^1200120102 is an apocalyptic number.

1200120102 is an abundant number, since it is smaller than the sum of its proper divisors (1472742090).

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

1200120102 is a wasteful number, since it uses less digits than its factorization.

1200120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5653 (or 5650 counting only the distinct ones).

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

The square root of 1200120102 is about 34642.7496310556. The cubic root of 1200120102 is about 1062.6940200609.

Adding to 1200120102 its reverse (2010210021), we get a palindrome (3210330123).

The spelling of 1200120102 in words is "one billion, two hundred million, one hundred twenty thousand, one hundred two".