20121201221002 has 8 divisors (see below), whose sum is σ = 34493487807456. Its totient is φ = 8623371951852.

The previous prime is 20121201220921. The next prime is 20121201221053. The reversal of 20121201221002 is 20012210212102.

It is a happy number.

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, 718614329308 + ... + 718614329335.

It is an arithmetic number, because the mean of its divisors is an integer number (4311685975932).

Almost surely, 2^{20121201221002} is an apocalyptic number.

20121201221002 is a deficient number, since it is larger than the sum of its proper divisors (14372286586454).

20121201221002 is a wasteful number, since it uses less digits than its factorization.

20121201221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437228658652.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121201221002 its reverse (20012210212102), we get a palindrome (40133411433104).

The spelling of 20121201221002 in words is "twenty trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, two".