1200121111022 has 8 divisors (see below), whose sum is σ = 1800186318072. Its totient is φ = 600059005000.

The previous prime is 1200121111009. The next prime is 1200121111027. The reversal of 1200121111022 is 2201111210021.

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

It is a super-2 number, since 2×1200121111022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200121110988 and 1200121111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200121111027) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1085372 + ... + 1891632.

It is an arithmetic number, because the mean of its divisors is an integer number (225023289759).

Almost surely, 2^{1200121111022} is an apocalyptic number.

1200121111022 is a deficient number, since it is larger than the sum of its proper divisors (600065207050).

1200121111022 is an equidigital number, since it uses as much as digits as its factorization.

1200121111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550514.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200121111022 its reverse (2201111210021), we get a palindrome (3401232321043).

The spelling of 1200121111022 in words is "one trillion, two hundred billion, one hundred twenty-one million, one hundred eleven thousand, twenty-two".