101001202021221 has 32 divisors (see below), whose sum is σ = 141974670489600. Its totient is φ = 63691881534720.

The previous prime is 101001202021207. The next prime is 101001202021253. The reversal of 101001202021221 is 122120202100101.

It is not a de Polignac number, because 101001202021221 - 2⁹ = 101001202020709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101001202021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001202021201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435386100 + ... + 435618018.

It is an arithmetic number, because the mean of its divisors is an integer number (4436708452800).

Almost surely, 2^{101001202021221} is an apocalyptic number.

It is an amenable number.

101001202021221 is a deficient number, since it is larger than the sum of its proper divisors (40973468468379).

101001202021221 is a wasteful number, since it uses less digits than its factorization.

101001202021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243689.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101001202021221 its reverse (122120202100101), we get a palindrome (223121404121322).

The spelling of 101001202021221 in words is "one hundred one trillion, one billion, two hundred two million, twenty-one thousand, two hundred twenty-one".