1200001321202 has 4 divisors (see below), whose sum is σ = 1800001981806. Its totient is φ = 600000660600.

The previous prime is 1200001321193. The next prime is 1200001321219. The reversal of 1200001321202 is 2021231000021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1109291326441 + 90709994761 = 1053229^2 + 301181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300000330299 + ... + 300000330302.

Almost surely, 2^{1200001321202} is an apocalyptic number.

1200001321202 is a deficient number, since it is larger than the sum of its proper divisors (600000660604).

1200001321202 is an equidigital number, since it uses as much as digits as its factorization.

1200001321202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600000660603.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1200001321202 its reverse (2021231000021), we get a palindrome (3221232321223).

The spelling of 1200001321202 in words is "one trillion, two hundred billion, one million, three hundred twenty-one thousand, two hundred two".