20121111010002 has 32 divisors (see below), whose sum is σ = 42645247908480. Its totient is φ = 6317814500480.

The previous prime is 20121111009977. The next prime is 20121111010061. The reversal of 20121111010002 is 20001011112102.

It is a self number, because there is not a number n which added to its sum of digits gives 20121111010002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410219318 + ... + 1410233585.

It is an arithmetic number, because the mean of its divisors is an integer number (1332663997140).

Almost surely, 2^{20121111010002} is an apocalyptic number.

20121111010002 is an abundant number, since it is smaller than the sum of its proper divisors (22524136898478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121111010002 is a wasteful number, since it uses less digits than its factorization.

20121111010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820452978.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20121111010002 its reverse (20001011112102), we get a palindrome (40122122122104).

The spelling of 20121111010002 in words is "twenty trillion, one hundred twenty-one billion, one hundred eleven million, ten thousand, two".