1102112121 has 16 divisors (see below), whose sum is σ = 1605878208. Its totient is φ = 666777600.

The previous prime is 1102112117. The next prime is 1102112131. The reversal of 1102112121 is 1212112011.

It is not a de Polignac number, because 1102112121 - 2² = 1102112117 is a prime.

It is a super-2 number, since 2×1102112121² = 2429302254510237282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1102112097 and 1102112106.

It is not an unprimeable number, because it can be changed into a prime (1102112111) 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, 9900 + ... + 47981.

It is an arithmetic number, because the mean of its divisors is an integer number (100367388).

Almost surely, 2^1102112121 is an apocalyptic number.

1102112121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102112121 is a deficient number, since it is larger than the sum of its proper divisors (503766087).

1102112121 is a wasteful number, since it uses less digits than its factorization.

1102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58472.

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

The square root of 1102112121 is about 33198.0740555834. The cubic root of 1102112121 is about 1032.9403901607.

Adding to 1102112121 its reverse (1212112011), we get a palindrome (2314224132).

The spelling of 1102112121 in words is "one billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".