1111022121 has 12 divisors (see below), whose sum is σ = 1628275376. Its totient is φ = 673346520.

The previous prime is 1111022117. The next prime is 1111022123. The reversal of 1111022121 is 1212201111.

It is not a de Polignac number, because 1111022121 - 2² = 1111022117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111022097 and 1111022106.

It is not an unprimeable number, because it can be changed into a prime (1111022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1529971 + ... + 1530696.

Almost surely, 2^1111022121 is an apocalyptic number.

1111022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111022121 is a deficient number, since it is larger than the sum of its proper divisors (517253255).

1111022121 is a wasteful number, since it uses less digits than its factorization.

1111022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060692 (or 3060681 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1111022121 is about 33331.9984549382. The cubic root of 1111022121 is about 1035.7165166165.

Adding to 1111022121 its reverse (1212201111), we get a palindrome (2323223232).

The spelling of 1111022121 in words is "one billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".