1100220212121 has 8 divisors (see below), whose sum is σ = 1467595065024. Its totient is φ = 733162750320.

The previous prime is 1100220212111. The next prime is 1100220212149. The reversal of 1100220212121 is 1212120220011.

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

It is not a de Polignac number, because 1100220212121 - 2³⁵ = 1065860473753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100220212121.

It is not an unprimeable number, because it can be changed into a prime (1100220212111) 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, 79339686 + ... + 79353551.

It is an arithmetic number, because the mean of its divisors is an integer number (183449383128).

Almost surely, 2^{1100220212121} is an apocalyptic number.

It is an amenable number.

1100220212121 is a deficient number, since it is larger than the sum of its proper divisors (367374852903).

1100220212121 is a wasteful number, since it uses less digits than its factorization.

1100220212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158695551.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1100220212121 its reverse (1212120220011), we get a palindrome (2312340432132).

The spelling of 1100220212121 in words is "one trillion, one hundred billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-one".