4121203212 has 126 divisors (see below), whose sum is σ = 12579070308. Its totient is φ = 1177445808.

The previous prime is 4121203201. The next prime is 4121203283. The reversal of 4121203212 is 2123021214.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (126).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 128463 + ... + 157305.

Almost surely, 2^4121203212 is an apocalyptic number.

4121203212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4121203212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6289535154).

4121203212 is an abundant number, since it is smaller than the sum of its proper divisors (8457867096).

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

4121203212 is a wasteful number, since it uses less digits than its factorization.

4121203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28879 (or 28855 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4121203212 is about 64196.5981341691. The cubic root of 4121203212 is about 1603.2749603025.

Adding to 4121203212 its reverse (2123021214), we get a palindrome (6244224426).

The spelling of 4121203212 in words is "four billion, one hundred twenty-one million, two hundred three thousand, two hundred twelve".