1222023201985 has 4 divisors (see below), whose sum is σ = 1466427842388. Its totient is φ = 977618561584.

The previous prime is 1222023201983. The next prime is 1222023202003. The reversal of 1222023201985 is 5891023202221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 711730136881 + 510293065104 = 843641^2 + 714348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222023201985 - 2¹ = 1222023201983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222023201983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122202320194 + ... + 122202320203.

It is an arithmetic number, because the mean of its divisors is an integer number (366606960597).

Almost surely, 2^{1222023201985} is an apocalyptic number.

It is an amenable number.

1222023201985 is a deficient number, since it is larger than the sum of its proper divisors (244404640403).

1222023201985 is an equidigital number, since it uses as much as digits as its factorization.

1222023201985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244404640402.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 1222023201985 in words is "one trillion, two hundred twenty-two billion, twenty-three million, two hundred one thousand, nine hundred eighty-five".