1201221020002 has 8 divisors (see below), whose sum is σ = 1801859885676. Its totient is φ = 600601058112.

The previous prime is 1201221019967. The next prime is 1201221020023. The reversal of 1201221020002 is 2000201221021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1199504657961 + 1716362041 = 1095219^2 + 41429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4566003 + ... + 4821910.

Almost surely, 2^{1201221020002} is an apocalyptic number.

1201221020002 is a deficient number, since it is larger than the sum of its proper divisors (600638865674).

1201221020002 is an equidigital number, since it uses as much as digits as its factorization.

1201221020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451892.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1201221020002 its reverse (2000201221021), we get a palindrome (3201422241023).

The spelling of 1201221020002 in words is "one trillion, two hundred one billion, two hundred twenty-one million, twenty thousand, two".