210121020121101 has 8 divisors (see below), whose sum is σ = 289822096718880. Its totient is φ = 135250311802032.

The previous prime is 210121020121073. The next prime is 210121020121109. The reversal of 210121020121101 is 101121020121012.

It is a happy number.

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

It is not a de Polignac number, because 210121020121101 - 2³⁵ = 210086660382733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121020121109) 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 7 ways as a sum of consecutive naturals, for example, 1207592069575 + ... + 1207592069748.

It is an arithmetic number, because the mean of its divisors is an integer number (36227762089860).

Almost surely, 2^{210121020121101} is an apocalyptic number.

It is an amenable number.

210121020121101 is a deficient number, since it is larger than the sum of its proper divisors (79701076597779).

210121020121101 is a wasteful number, since it uses less digits than its factorization.

210121020121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415184139355.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210121020121101 its reverse (101121020121012), we get a palindrome (311242040242113).

The spelling of 210121020121101 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred one".