20121201002 has 16 divisors (see below), whose sum is σ = 34535521152. Its totient is φ = 8612863440.

The previous prime is 20121200989. The next prime is 20121201017. The reversal of 20121201002 is 20010212102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863798 + ... + 886785.

It is an arithmetic number, because the mean of its divisors is an integer number (2158470072).

Almost surely, 2^20121201002 is an apocalyptic number.

20121201002 is a deficient number, since it is larger than the sum of its proper divisors (14414320150).

20121201002 is a wasteful number, since it uses less digits than its factorization.

20121201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751413.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20121201002 its reverse (20010212102), we get a palindrome (40131413104).

The spelling of 20121201002 in words is "twenty billion, one hundred twenty-one million, two hundred one thousand, two".