1100212122121 has 16 divisors (see below), whose sum is σ = 1260943580160. Its totient is φ = 940373940240.

The previous prime is 1100212122101. The next prime is 1100212122143. The reversal of 1100212122121 is 1212212120011.

It is not a de Polignac number, because 1100212122121 - 2⁷ = 1100212121993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100212122095 and 1100212122104.

It is not an unprimeable number, because it can be changed into a prime (1100212122101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3429876 + ... + 3736906.

It is an arithmetic number, because the mean of its divisors is an integer number (78808973760).

Almost surely, 2^{1100212122121} is an apocalyptic number.

It is an amenable number.

1100212122121 is a deficient number, since it is larger than the sum of its proper divisors (160731458039).

1100212122121 is an equidigital number, since it uses as much as digits as its factorization.

1100212122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308484.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1100212122121 its reverse (1212212120011), we get a palindrome (2312424242132).

The spelling of 1100212122121 in words is "one trillion, one hundred billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".