222220202212061 has 2 divisors, whose sum is σ = 222220202212062. Its totient is φ = 222220202212060.

The previous prime is 222220202212039. The next prime is 222220202212103. The reversal of 222220202212061 is 160212202022222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171945366486436 + 50274835725625 = 13112794^2 + 7090475^2 .

It is a cyclic number.

It is not a de Polignac number, because 222220202212061 - 2²² = 222220198017757 is a prime.

It is a super-2 number, since 2×222220202212061² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222220202212061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222220202214061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110101106030 + 111110101106031.

It is an arithmetic number, because the mean of its divisors is an integer number (111110101106031).

Almost surely, 2^{222220202212061} is an apocalyptic number.

It is an amenable number.

222220202212061 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220202212061 is an equidigital number, since it uses as much as digits as its factorization.

222220202212061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 222220202212061 its reverse (160212202022222), we get a palindrome (382432404234283).

The spelling of 222220202212061 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred two million, two hundred twelve thousand, sixty-one".