222012111001 has 2 divisors, whose sum is σ = 222012111002. Its totient is φ = 222012111000.

The previous prime is 222012110987. The next prime is 222012111037. The reversal of 222012111001 is 100111210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220190870025 + 1821240976 = 469245^2 + 42676^2 .

It is a cyclic number.

It is not a de Polignac number, because 222012111001 - 2¹⁷ = 222011979929 is a prime.

It is a super-2 number, since 2×222012111001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222012111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111006055500 + 111006055501.

It is an arithmetic number, because the mean of its divisors is an integer number (111006055501).

Almost surely, 2^222012111001 is an apocalyptic number.

It is an amenable number.

222012111001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222012111001 is an equidigital number, since it uses as much as digits as its factorization.

222012111001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222012111001 its reverse (100111210222), we get a palindrome (322123321223).

The spelling of 222012111001 in words is "two hundred twenty-two billion, twelve million, one hundred eleven thousand, one".