1022201001209 has 2 divisors, whose sum is σ = 1022201001210. Its totient is φ = 1022201001208.

The previous prime is 1022201001163. The next prime is 1022201001251. The reversal of 1022201001209 is 9021001022201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829328955625 + 192872045584 = 910675^2 + 439172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022201001209 - 2²⁴ = 1022184223993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022201001109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511100500604 + 511100500605.

It is an arithmetic number, because the mean of its divisors is an integer number (511100500605).

Almost surely, 2^{1022201001209} is an apocalyptic number.

It is an amenable number.

1022201001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022201001209 is an equidigital number, since it uses as much as digits as its factorization.

1022201001209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1022201001209 in words is "one trillion, twenty-two billion, two hundred one million, one thousand, two hundred nine".