210100021201121 has 4 divisors (see below), whose sum is σ = 210100053050544. Its totient is φ = 210099989351700.

The previous prime is 210100021201099. The next prime is 210100021201183. The reversal of 210100021201121 is 121102120001012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210100021201121 - 2¹⁴ = 210100021184737 is a prime.

It is a super-2 number, since 2×210100021201121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100021201096 and 210100021201105.

It is not an unprimeable number, because it can be changed into a prime (210100021201621) 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 3 ways as a sum of consecutive naturals, for example, 1930415 + ... + 20589476.

It is an arithmetic number, because the mean of its divisors is an integer number (52525013262636).

Almost surely, 2^{210100021201121} is an apocalyptic number.

It is an amenable number.

210100021201121 is a deficient number, since it is larger than the sum of its proper divisors (31849423).

210100021201121 is an equidigital number, since it uses as much as digits as its factorization.

210100021201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31849422.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210100021201121 its reverse (121102120001012), we get a palindrome (331202141202133).

The spelling of 210100021201121 in words is "two hundred ten trillion, one hundred billion, twenty-one million, two hundred one thousand, one hundred twenty-one".