201221040122101 has 8 divisors (see below), whose sum is σ = 206313225668000. Its totient is φ = 196147610325072.

The previous prime is 201221040122023. The next prime is 201221040122131. The reversal of 201221040122101 is 101221040122102.

201221040122101 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 201221040122101 - 2³⁷ = 201083601168629 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 (201221040122131) 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, 4688915490 + ... + 4688958403.

It is an arithmetic number, because the mean of its divisors is an integer number (25789153208500).

Almost surely, 2^{201221040122101} is an apocalyptic number.

It is an amenable number.

201221040122101 is a deficient number, since it is larger than the sum of its proper divisors (5092185545899).

201221040122101 is an equidigital number, since it uses as much as digits as its factorization.

201221040122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9377874435.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221040122101 its reverse (101221040122102), we get a palindrome (302442080244203).

Subtracting from 201221040122101 its reverse (101221040122102), we obtain a palindrome (99999999999999).

The spelling of 201221040122101 in words is "two hundred one trillion, two hundred twenty-one billion, forty million, one hundred twenty-two thousand, one hundred one".