101020110101221 has 4 divisors (see below), whose sum is σ = 101052477970444. Its totient is φ = 100987742232000.

The previous prime is 101020110101191. The next prime is 101020110101269. The reversal of 101020110101221 is 122101011020101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 919084598721 + 100101025502500 = 958689^2 + 10005050^2 .

It is a cyclic number.

It is not a de Polignac number, because 101020110101221 - 2³⁵ = 100985750362853 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 (101020110101921) 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, 16183929930 + ... + 16183936171.

It is an arithmetic number, because the mean of its divisors is an integer number (25263119492611).

Almost surely, 2^{101020110101221} is an apocalyptic number.

It is an amenable number.

101020110101221 is a deficient number, since it is larger than the sum of its proper divisors (32367869223).

101020110101221 is an equidigital number, since it uses as much as digits as its factorization.

101020110101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32367869222.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101020110101221 its reverse (122101011020101), we get a palindrome (223121121121322).

The spelling of 101020110101221 in words is "one hundred one trillion, twenty billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".