1201021100002 has 4 divisors (see below), whose sum is σ = 1801531650006. Its totient is φ = 600510550000.

The previous prime is 1201021099897. The next prime is 1201021100003. The reversal of 1201021100002 is 2000011201021.

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., 657865365921 + 543155734081 = 811089^2 + 736991^2 .

It is not an unprimeable number, because it can be changed into a prime (1201021100003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300255274999 + ... + 300255275002.

Almost surely, 2^{1201021100002} is an apocalyptic number.

1201021100002 is a deficient number, since it is larger than the sum of its proper divisors (600510550004).

1201021100002 is an equidigital number, since it uses as much as digits as its factorization.

1201021100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600510550003.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201021100002 its reverse (2000011201021), we get a palindrome (3201032301023).

The spelling of 1201021100002 in words is "one trillion, two hundred one billion, twenty-one million, one hundred thousand, two".