1200122022121 has 8 divisors (see below), whose sum is σ = 1309402699488. Its totient is φ = 1090871124000.

The previous prime is 1200122022089. The next prime is 1200122022131. The reversal of 1200122022121 is 1212202210021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1200122022121 - 2⁵ = 1200122022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200122022095 and 1200122022104.

It is not an unprimeable number, because it can be changed into a prime (1200122022131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7360500 + ... + 7521781.

It is an arithmetic number, because the mean of its divisors is an integer number (163675337436).

Almost surely, 2^{1200122022121} is an apocalyptic number.

1200122022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200122022121 is a deficient number, since it is larger than the sum of its proper divisors (109280677367).

1200122022121 is a wasteful number, since it uses less digits than its factorization.

1200122022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14889623.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200122022121 its reverse (1212202210021), we get a palindrome (2412324232142).

The spelling of 1200122022121 in words is "one trillion, two hundred billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".