1212241404 has 72 divisors (see below), whose sum is σ = 3244348800. Its totient is φ = 351364640.

The previous prime is 1212241369. The next prime is 1212241409. The reversal of 1212241404 is 4041422121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212241409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15247 + ... + 51545.

It is an arithmetic number, because the mean of its divisors is an integer number (45060400).

Almost surely, 2^1212241404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212241404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622174400).

1212241404 is an abundant number, since it is smaller than the sum of its proper divisors (2032107396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212241404 is a wasteful number, since it uses less digits than its factorization.

1212241404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36351 (or 36338 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1212241404 is about 34817.2572727951. The cubic root of 1212241404 is about 1066.2598047684.

Adding to 1212241404 its reverse (4041422121), we get a palindrome (5253663525).

The spelling of 1212241404 in words is "one billion, two hundred twelve million, two hundred forty-one thousand, four hundred four".