1200012102 has 12 divisors (see below), whose sum is σ = 2600026260. Its totient is φ = 400004028.

The previous prime is 1200012101. The next prime is 1200012173. The reversal of 1200012102 is 2012100021.

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 (1200012101) 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, 33333652 + ... + 33333687.

It is an arithmetic number, because the mean of its divisors is an integer number (216668855).

Almost surely, 2^1200012102 is an apocalyptic number.

1200012102 is an abundant number, since it is smaller than the sum of its proper divisors (1400014158).

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

1200012102 is a wasteful number, since it uses less digits than its factorization.

1200012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66667347 (or 66667344 counting only the distinct ones).

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

The square root of 1200012102 is about 34641.1908282611. The cubic root of 1200012102 is about 1062.6621414745.

Adding to 1200012102 its reverse (2012100021), we get a palindrome (3212112123).

The spelling of 1200012102 in words is "one billion, two hundred million, twelve thousand, one hundred two".