20121101100010 has 32 divisors (see below), whose sum is σ = 36258547104000. Its totient is φ = 8039428415040.

The previous prime is 20121101099951. The next prime is 20121101100047. The reversal of 20121101100010 is 1000110112102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 20121101100010.

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, 67292316 + ... + 67590664.

It is an arithmetic number, because the mean of its divisors is an integer number (1133079597000).

Almost surely, 2^{20121101100010} is an apocalyptic number.

20121101100010 is a deficient number, since it is larger than the sum of its proper divisors (16137446003990).

20121101100010 is a wasteful number, since it uses less digits than its factorization.

20121101100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305886.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20121101100010 its reverse (1000110112102), we get a palindrome (21121211212112).

The spelling of 20121101100010 in words is "twenty trillion, one hundred twenty-one billion, one hundred one million, one hundred thousand, ten".