20120222111009 has 2 divisors, whose sum is σ = 20120222111010. Its totient is φ = 20120222111008.

The previous prime is 20120222110997. The next prime is 20120222111131. The reversal of 20120222111009 is 90011122202102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18643396840000 + 1476825271009 = 4317800^2 + 1215247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120222111009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120222101009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111055504 + 10060111055505.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111055505).

Almost surely, 2^{20120222111009} is an apocalyptic number.

It is an amenable number.

20120222111009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222111009 is an equidigital number, since it uses as much as digits as its factorization.

20120222111009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 20120222111009 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eleven thousand, nine".