222220200002021 has 8 divisors (see below), whose sum is σ = 239345348621400. Its totient is φ = 205099520965632.

The previous prime is 222220200001927. The next prime is 222220200002039. The reversal of 222220200002021 is 120200002022222.

It can be written as a sum of positive squares in 4 ways, for example, as 14502493869796 + 207717706132225 = 3808214^2 + 14412415^2 .

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 222220200002021 - 2²² = 222220195807717 is a prime.

It is a super-3 number, since 3×222220200002021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220200002321) 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, 1117292480 + ... + 1117491353.

It is an arithmetic number, because the mean of its divisors is an integer number (29918168577675).

Almost surely, 2^{222220200002021} is an apocalyptic number.

It is an amenable number.

222220200002021 is a deficient number, since it is larger than the sum of its proper divisors (17125148619379).

222220200002021 is a wasteful number, since it uses less digits than its factorization.

222220200002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234791495.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 222220200002021 its reverse (120200002022222), we get a palindrome (342420202024243).

The spelling of 222220200002021 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred million, two thousand, twenty-one".