210121220000101 has 4 divisors (see below), whose sum is σ = 216899323871104. Its totient is φ = 203343116129100.

The previous prime is 210121220000093. The next prime is 210121220000117. The reversal of 210121220000101 is 101000022121012.

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 210121220000101 - 2³ = 210121220000093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121220000191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389051935455 + ... + 3389051935516.

It is an arithmetic number, because the mean of its divisors is an integer number (54224830967776).

Almost surely, 2^{210121220000101} is an apocalyptic number.

It is an amenable number.

210121220000101 is a deficient number, since it is larger than the sum of its proper divisors (6778103871003).

210121220000101 is an equidigital number, since it uses as much as digits as its factorization.

210121220000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778103871002.

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

Adding to 210121220000101 its reverse (101000022121012), we get a palindrome (311121242121113).

The spelling of 210121220000101 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty million, one hundred one", and thus it is an aban number.