1200001221022 has 8 divisors (see below), whose sum is σ = 1800031883400. Its totient is φ = 599990593224.

The previous prime is 1200001220987. The next prime is 1200001221037. The reversal of 1200001221022 is 2201221000021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1200001220993 and 1200001221011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857997 + ... + 5099032.

It is an arithmetic number, because the mean of its divisors is an integer number (225003985425).

Almost surely, 2^{1200001221022} is an apocalyptic number.

1200001221022 is a deficient number, since it is larger than the sum of its proper divisors (600030662378).

1200001221022 is an equidigital number, since it uses as much as digits as its factorization.

1200001221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10017290.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200001221022 its reverse (2201221000021), we get a palindrome (3401222221043).

The spelling of 1200001221022 in words is "one trillion, two hundred billion, one million, two hundred twenty-one thousand, twenty-two".