222201021001021 has 8 divisors (see below), whose sum is σ = 232138997703000. Its totient is φ = 212414769134400.

The previous prime is 222201021001013. The next prime is 222201021001033. The reversal of 222201021001021 is 120100120102222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 105486251422500 + 116714769578521 = 10270650^2 + 10803461^2 .

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 222201021001021 - 2³ = 222201021001013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222201021000986 and 222201021001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201021001061) 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, 37931205846 + ... + 37931211703.

It is an arithmetic number, because the mean of its divisors is an integer number (29017374712875).

Almost surely, 2^{222201021001021} is an apocalyptic number.

It is an amenable number.

222201021001021 is a deficient number, since it is larger than the sum of its proper divisors (9937976701979).

222201021001021 is a wasteful number, since it uses less digits than its factorization.

222201021001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75862417679.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222201021001021 its reverse (120100120102222), we get a palindrome (342301141103243).

The spelling of 222201021001021 in words is "two hundred twenty-two trillion, two hundred one billion, twenty-one million, one thousand, twenty-one".