20100121201102 has 32 divisors (see below), whose sum is σ = 30658880609280. Its totient is φ = 9881580115680.

The previous prime is 20100121201087. The next prime is 20100121201109. The reversal of 20100121201102 is 20110212100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100121201109) by changing a digit.

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, 118052952 + ... + 118223092.

It is an arithmetic number, because the mean of its divisors is an integer number (958090019040).

Almost surely, 2^{20100121201102} is an apocalyptic number.

20100121201102 is a deficient number, since it is larger than the sum of its proper divisors (10558759408178).

20100121201102 is a wasteful number, since it uses less digits than its factorization.

20100121201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173328.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20100121201102 its reverse (20110212100102), we get a palindrome (40210333301204).

The spelling of 20100121201102 in words is "twenty trillion, one hundred billion, one hundred twenty-one million, two hundred one thousand, one hundred two".