222103130210021 has 4 divisors (see below), whose sum is σ = 222283848787500. Its totient is φ = 221922411632544.

The previous prime is 222103130209951. The next prime is 222103130210023. The reversal of 222103130210021 is 120012031301222.

222103130210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 203810999985121 + 18292130224900 = 14276239^2 + 4276930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222103130210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222103130209975 and 222103130210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222103130210023) 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, 90359286896 + ... + 90359289353.

It is an arithmetic number, because the mean of its divisors is an integer number (55570962196875).

Almost surely, 2^{222103130210021} is an apocalyptic number.

It is an amenable number.

222103130210021 is a deficient number, since it is larger than the sum of its proper divisors (180718577479).

222103130210021 is a wasteful number, since it uses less digits than its factorization.

222103130210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180718577478.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 222103130210021 its reverse (120012031301222), we get a palindrome (342115161511243).

The spelling of 222103130210021 in words is "two hundred twenty-two trillion, one hundred three billion, one hundred thirty million, two hundred ten thousand, twenty-one".