20102120100121 has 8 divisors (see below), whose sum is σ = 21507013740800. Its totient is φ = 18731915191440.

The previous prime is 20102120100119. The next prime is 20102120100157. The reversal of 20102120100121 is 12100102120102.

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

It is a cyclic number.

It is not a de Polignac number, because 20102120100121 - 2¹ = 20102120100119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102120100421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8672181801 + ... + 8672184118.

It is an arithmetic number, because the mean of its divisors is an integer number (2688376717600).

Almost surely, 2^{20102120100121} is an apocalyptic number.

It is an amenable number.

20102120100121 is a deficient number, since it is larger than the sum of its proper divisors (1404893640679).

20102120100121 is a wasteful number, since it uses less digits than its factorization.

20102120100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17344365999.

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

Adding to 20102120100121 its reverse (12100102120102), we get a palindrome (32202222220223).

The spelling of 20102120100121 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".