1111032212121 has 24 divisors (see below), whose sum is σ = 1729856646336. Its totient is φ = 683085368160.

The previous prime is 1111032212113. The next prime is 1111032212123. The reversal of 1111032212121 is 1212122301111.

It is a happy number.

It is not a de Polignac number, because 1111032212121 - 2³ = 1111032212113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111032212094 and 1111032212103.

It is not an unprimeable number, because it can be changed into a prime (1111032212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4224325 + ... + 4479618.

It is an arithmetic number, because the mean of its divisors is an integer number (72077360264).

Almost surely, 2^{1111032212121} is an apocalyptic number.

It is an amenable number.

1111032212121 is a deficient number, since it is larger than the sum of its proper divisors (618824434215).

1111032212121 is a wasteful number, since it uses less digits than its factorization.

1111032212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8705053 (or 8705050 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1111032212121 its reverse (1212122301111), we get a palindrome (2323154513232).

The spelling of 1111032212121 in words is "one trillion, one hundred eleven billion, thirty-two million, two hundred twelve thousand, one hundred twenty-one".