121214221124 has 12 divisors (see below), whose sum is σ = 212142675948. Its totient is φ = 60602028000.

The previous prime is 121214221099. The next prime is 121214221127. The reversal of 121214221124 is 421122412121.

It can be written as a sum of positive squares in 2 ways, for example, as 86406602500 + 34807618624 = 293950^2 + 186568^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121214221124.

It is not an unprimeable number, because it can be changed into a prime (121214221127) 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 3 ways as a sum of consecutive naturals, for example, 1216727 + ... + 1312574.

It is an arithmetic number, because the mean of its divisors is an integer number (17678556329).

Almost surely, 2^121214221124 is an apocalyptic number.

It is an amenable number.

121214221124 is a deficient number, since it is larger than the sum of its proper divisors (90928454824).

121214221124 is a wasteful number, since it uses less digits than its factorization.

121214221124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541286 (or 2541284 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

Adding to 121214221124 its reverse (421122412121), we get a palindrome (542336633245).

The spelling of 121214221124 in words is "one hundred twenty-one billion, two hundred fourteen million, two hundred twenty-one thousand, one hundred twenty-four".