2121201220102 has 8 divisors (see below), whose sum is σ = 3181915270800. Its totient is φ = 1060562796504.

The previous prime is 2121201220097. The next prime is 2121201220123. The reversal of 2121201220102 is 2010221021212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 18836602 + ... + 18948877.

It is an arithmetic number, because the mean of its divisors is an integer number (397739408850).

Almost surely, 2^{2121201220102} is an apocalyptic number.

2121201220102 is a deficient number, since it is larger than the sum of its proper divisors (1060714050698).

2121201220102 is a wasteful number, since it uses less digits than its factorization.

2121201220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37813550.

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

Adding to 2121201220102 its reverse (2010221021212), we get a palindrome (4131422241314).

The spelling of 2121201220102 in words is "two trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty thousand, one hundred two".