1214111121 has 32 divisors (see below), whose sum is σ = 1689534720. Its totient is φ = 775008000.

The previous prime is 1214111111. The next prime is 1214111123. The reversal of 1214111121 is 1211114121.

It is a happy number.

It is not a de Polignac number, because 1214111121 - 2⁹ = 1214110609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1214111121.

It is not an unprimeable number, because it can be changed into a prime (1214111123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1464135 + ... + 1464963.

It is an arithmetic number, because the mean of its divisors is an integer number (52797960).

Almost surely, 2^1214111121 is an apocalyptic number.

It is an amenable number.

1214111121 is a deficient number, since it is larger than the sum of its proper divisors (475423599).

1214111121 is a wasteful number, since it uses less digits than its factorization.

1214111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097.

The product of its digits is 16, while the sum is 15.

The square root of 1214111121 is about 34844.0973623941. The cubic root of 1214111121 is about 1066.8077099409.

Adding to 1214111121 its reverse (1211114121), we get a palindrome (2425225242).

The spelling of 1214111121 in words is "one billion, two hundred fourteen million, one hundred eleven thousand, one hundred twenty-one".