100021220020121 has 8 divisors (see below), whose sum is σ = 107736741901824. Its totient is φ = 92586262570560.

The previous prime is 100021220020093. The next prime is 100021220020153. The reversal of 100021220020121 is 121020022120001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021220020121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100021220020096 and 100021220020105.

It is not an unprimeable number, because it can be changed into a prime (100021220020621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70141107296 + ... + 70141108721.

It is an arithmetic number, because the mean of its divisors is an integer number (13467092737728).

Almost surely, 2^{100021220020121} is an apocalyptic number.

It is an amenable number.

100021220020121 is a deficient number, since it is larger than the sum of its proper divisors (7715521881703).

100021220020121 is a wasteful number, since it uses less digits than its factorization.

100021220020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140282216071.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100021220020121 its reverse (121020022120001), we get a palindrome (221041242140122).

The spelling of 100021220020121 in words is "one hundred trillion, twenty-one billion, two hundred twenty million, twenty thousand, one hundred twenty-one".