221000210121101 has 8 divisors (see below), whose sum is σ = 224746215829440. Its totient is φ = 217254212394048.

The previous prime is 221000210121029. The next prime is 221000210121143. The reversal of 221000210121101 is 101121012000122.

221000210121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221000210121101 - 2¹⁰ = 221000210120077 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 (221000210121191) 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, 87854885 + ... + 90335381.

It is an arithmetic number, because the mean of its divisors is an integer number (28093276978680).

Almost surely, 2^{221000210121101} is an apocalyptic number.

It is an amenable number.

221000210121101 is a deficient number, since it is larger than the sum of its proper divisors (3746005708339).

221000210121101 is a wasteful number, since it uses less digits than its factorization.

221000210121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990643.

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

Adding to 221000210121101 its reverse (101121012000122), we get a palindrome (322121222121223).

The spelling of 221000210121101 in words is "two hundred twenty-one trillion, two hundred ten million, one hundred twenty-one thousand, one hundred one".