1200022121123 has 8 divisors (see below), whose sum is σ = 1371593066592. Its totient is φ = 1028485979136.

The previous prime is 1200022121119. The next prime is 1200022121131. The reversal of 1200022121123 is 3211212200021.

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

It is not a de Polignac number, because 1200022121123 - 2² = 1200022121119 is a prime.

It is a super-2 number, since 2×1200022121123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200022121423) 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, 8626940 + ... + 8764937.

It is an arithmetic number, because the mean of its divisors is an integer number (171449133324).

Almost surely, 2^{1200022121123} is an apocalyptic number.

1200022121123 is a deficient number, since it is larger than the sum of its proper divisors (171570945469).

1200022121123 is an equidigital number, since it uses as much as digits as its factorization.

1200022121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17401741.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1200022121123 its reverse (3211212200021), we get a palindrome (4411234321144).

The spelling of 1200022121123 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty-three".