1201111002 has 96 divisors (see below), whose sum is σ = 3277642368. Its totient is φ = 309391488.

The previous prime is 1201110997. The next prime is 1201111007. The reversal of 1201111002 is 2001111021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1201110997) and next prime (1201111007).

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

It is not an unprimeable number, because it can be changed into a prime (1201111007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61908 + ... + 78960.

It is an arithmetic number, because the mean of its divisors is an integer number (34142108).

Almost surely, 2^1201111002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201111002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638821184).

1201111002 is an abundant number, since it is smaller than the sum of its proper divisors (2076531366).

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

1201111002 is a wasteful number, since it uses less digits than its factorization.

1201111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124 (or 17121 counting only the distinct ones).

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

The square root of 1201111002 is about 34657.0483740321. The cubic root of 1201111002 is about 1062.9864168579.

Adding to 1201111002 its reverse (2001111021), we get a palindrome (3202222023).

The spelling of 1201111002 in words is "one billion, two hundred one million, one hundred eleven thousand, two".