121221002020202 has 8 divisors (see below), whose sum is σ = 207807432034656. Its totient is φ = 51951858008652.

The previous prime is 121221002020177. The next prime is 121221002020229. The reversal of 121221002020202 is 202020200122121.

It is a happy number.

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

It is a super-2 number, since 2×121221002020202² (a number of 29 digits) contains 22 as substring.

121221002020202 is a modest number, since divided by 2020202 gives 1212210 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4329321500708 + ... + 4329321500735.

It is an arithmetic number, because the mean of its divisors is an integer number (25975929004332).

Almost surely, 2^{121221002020202} is an apocalyptic number.

121221002020202 is a deficient number, since it is larger than the sum of its proper divisors (86586430014454).

121221002020202 is an equidigital number, since it uses as much as digits as its factorization.

121221002020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658643001452.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121221002020202 its reverse (202020200122121), we get a palindrome (323241202142323).

The spelling of 121221002020202 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two million, twenty thousand, two hundred two".