1200001120022 has 4 divisors (see below), whose sum is σ = 1800001680036. Its totient is φ = 600000560010.

The previous prime is 1200001119991. The next prime is 1200001120057. The reversal of 1200001120022 is 2200211000021.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200001119985 and 1200001120012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300000280004 + ... + 300000280007.

It is an arithmetic number, because the mean of its divisors is an integer number (450000420009).

Almost surely, 2^{1200001120022} is an apocalyptic number.

1200001120022 is a deficient number, since it is larger than the sum of its proper divisors (600000560014).

1200001120022 is an equidigital number, since it uses as much as digits as its factorization.

1200001120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600000560013.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1200001120022 its reverse (2200211000021), we get a palindrome (3400212120043).

The spelling of 1200001120022 in words is "one trillion, two hundred billion, one million, one hundred twenty thousand, twenty-two".