1200021001122 has 16 divisors (see below), whose sum is σ = 2451106726272. Its totient is φ = 391496213040.

The previous prime is 1200021001117. The next prime is 1200021001141. The reversal of 1200021001122 is 2211001200021.

It is a super-3 number, since 3×1200021001122³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200021001098 and 1200021001107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2127696529 + ... + 2127697092.

It is an arithmetic number, because the mean of its divisors is an integer number (153194170392).

Almost surely, 2^{1200021001122} is an apocalyptic number.

1200021001122 is an abundant number, since it is smaller than the sum of its proper divisors (1251085725150).

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

1200021001122 is a wasteful number, since it uses less digits than its factorization.

1200021001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255393673.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200021001122 its reverse (2211001200021), we get a palindrome (3411022201143).

The spelling of 1200021001122 in words is "one trillion, two hundred billion, twenty-one million, one thousand, one hundred twenty-two".