222121000011061 has 2 divisors, whose sum is σ = 222121000011062. Its totient is φ = 222121000011060.

The previous prime is 222121000011019. The next prime is 222121000011143. The reversal of 222121000011061 is 160110000121222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177009560596036 + 45111439415025 = 13304494^2 + 6716505^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121000011061 - 2⁷ = 222121000010933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121000011011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060500005530 + 111060500005531.

It is an arithmetic number, because the mean of its divisors is an integer number (111060500005531).

Almost surely, 2^{222121000011061} is an apocalyptic number.

It is an amenable number.

222121000011061 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121000011061 is an equidigital number, since it uses as much as digits as its factorization.

222121000011061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 222121000011061 its reverse (160110000121222), we get a palindrome (382231000132283).

The spelling of 222121000011061 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, eleven thousand, sixty-one".