1200001022022 has 32 divisors (see below), whose sum is σ = 2661105106944. Its totient is φ = 357675415200.

The previous prime is 1200001021981. The next prime is 1200001022047. The reversal of 1200001022022 is 2202201000021.

It is a junction number, because it is equal to n+sod(n) for n = 1200001021989 and 1200001022007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149027398 + ... + 149035449.

It is an arithmetic number, because the mean of its divisors is an integer number (83159534592).

Almost surely, 2^{1200001022022} is an apocalyptic number.

1200001022022 is an abundant number, since it is smaller than the sum of its proper divisors (1461104084922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200001022022 is a wasteful number, since it uses less digits than its factorization.

1200001022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298062924.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1200001022022 its reverse (2202201000021), we get a palindrome (3402202022043).

The spelling of 1200001022022 in words is "one trillion, two hundred billion, one million, twenty-two thousand, twenty-two".