1121212036 has 96 divisors (see below), whose sum is σ = 2422344960. Its totient is φ = 443874816.

The previous prime is 1121212013. The next prime is 1121212063. The reversal of 1121212036 is 6302121211.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2012670 + ... + 2013226.

It is an arithmetic number, because the mean of its divisors is an integer number (25232760).

Almost surely, 2^1121212036 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 1121212036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211172480).

1121212036 is an abundant number, since it is smaller than the sum of its proper divisors (1301132924).

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

1121212036 is a wasteful number, since it uses less digits than its factorization.

1121212036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1121212036 is about 33484.5044162221. The cubic root of 1121212036 is about 1038.8732978063.

Adding to 1121212036 its reverse (6302121211), we get a palindrome (7423333247).

The spelling of 1121212036 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, thirty-six".