1200220112021 has 16 divisors (see below), whose sum is σ = 1373236101120. Its totient is φ = 1027593468720.

The previous prime is 1200220111957. The next prime is 1200220112027. The reversal of 1200220112021 is 1202110220021.

It is not a de Polignac number, because 1200220112021 - 2⁶ = 1200220111957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200220111987 and 1200220112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220112027) by changing a digit.

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, 59563070 + ... + 59583216.

It is an arithmetic number, because the mean of its divisors is an integer number (85827256320).

Almost surely, 2^{1200220112021} is an apocalyptic number.

It is an amenable number.

1200220112021 is a deficient number, since it is larger than the sum of its proper divisors (173015989099).

1200220112021 is a wasteful number, since it uses less digits than its factorization.

1200220112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29384.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200220112021 its reverse (1202110220021), we get a palindrome (2402330332042).

The spelling of 1200220112021 in words is "one trillion, two hundred billion, two hundred twenty million, one hundred twelve thousand, twenty-one".