101021002221204 has 72 divisors (see below), whose sum is σ = 281708973727272. Its totient is φ = 30325253944320.

The previous prime is 101021002221203. The next prime is 101021002221221. The reversal of 101021002221204 is 402122200120101.

It can be written as a sum of positive squares in 4 ways, for example, as 11818606352400 + 89202395868804 = 3437820^2 + 9444702^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021002221203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2632381329 + ... + 2632419704.

It is an arithmetic number, because the mean of its divisors is an integer number (3912624635101).

Almost surely, 2^{101021002221204} is an apocalyptic number.

It is an amenable number.

101021002221204 is an abundant number, since it is smaller than the sum of its proper divisors (180687971506068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101021002221204 is a wasteful number, since it uses less digits than its factorization.

101021002221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264801097 (or 5264801092 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 101021002221204 its reverse (402122200120101), we get a palindrome (503143202341305).

The spelling of 101021002221204 in words is "one hundred one trillion, twenty-one billion, two million, two hundred twenty-one thousand, two hundred four".