1201222019 has 4 divisors (see below), whose sum is σ = 1206467760. Its totient is φ = 1195976280.

The previous prime is 1201221961. The next prime is 1201222027. The reversal of 1201222019 is 9102221021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9102221021 = 21493 ⋅423497.

It is a cyclic number.

It is not a de Polignac number, because 1201222019 - 2¹² = 1201217923 is a prime.

It is a super-2 number, since 2×1201222019² = 2885868677860872722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201221019) 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, 2622527 + ... + 2622984.

It is an arithmetic number, because the mean of its divisors is an integer number (301616940).

Almost surely, 2^1201222019 is an apocalyptic number.

1201222019 is a deficient number, since it is larger than the sum of its proper divisors (5245741).

1201222019 is an equidigital number, since it uses as much as digits as its factorization.

1201222019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245740.

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

The square root of 1201222019 is about 34658.6499881343. The cubic root of 1201222019 is about 1063.0191659619.

The spelling of 1201222019 in words is "one billion, two hundred one million, two hundred twenty-two thousand, nineteen".