1201200102 has 48 divisors (see below), whose sum is σ = 2746926000. Its totient is φ = 378309312.

The previous prime is 1201200073. The next prime is 1201200107. The reversal of 1201200102 is 2010021021.

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 (1201200107) 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, 128524 + ... + 137552.

It is an arithmetic number, because the mean of its divisors is an integer number (57227625).

Almost surely, 2^1201200102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201200102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1373463000).

1201200102 is an abundant number, since it is smaller than the sum of its proper divisors (1545725898).

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

1201200102 is a wasteful number, since it uses less digits than its factorization.

1201200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445 (or 9442 counting only the distinct ones).

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

The square root of 1201200102 is about 34658.3338029975. Note that the first 3 decimals coincide. The cubic root of 1201200102 is about 1063.0127007867.

Adding to 1201200102 its reverse (2010021021), we get a palindrome (3211221123).

The spelling of 1201200102 in words is "one billion, two hundred one million, two hundred thousand, one hundred two".