20120222211209 has 2 divisors, whose sum is σ = 20120222211210. Its totient is φ = 20120222211208.

The previous prime is 20120222211179. The next prime is 20120222211233. The reversal of 20120222211209 is 90211222202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11322235711609 + 8797986499600 = 3364853^2 + 2966140^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120222211209 - 2³² = 20115927243913 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120222211409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111105604 + 10060111105605.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111105605).

Almost surely, 2^{20120222211209} is an apocalyptic number.

It is an amenable number.

20120222211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222211209 is an equidigital number, since it uses as much as digits as its factorization.

20120222211209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 20120222211209 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, two hundred nine".