2221210120009 has 2 divisors, whose sum is σ = 2221210120010. Its totient is φ = 2221210120008.

The previous prime is 2221210120001. The next prime is 2221210120049. The reversal of 2221210120009 is 9000210121222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2192925607609 + 28284512400 = 1480853^2 + 168180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221210120009 - 2³ = 2221210120001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221210120001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110605060004 + 1110605060005.

It is an arithmetic number, because the mean of its divisors is an integer number (1110605060005).

Almost surely, 2^{2221210120009} is an apocalyptic number.

It is an amenable number.

2221210120009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221210120009 is an equidigital number, since it uses as much as digits as its factorization.

2221210120009 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 22.

The spelling of 2221210120009 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, nine".