1211089152 has 432 divisors, whose sum is σ = 4213321728. Its totient is φ = 301916160.

The previous prime is 1211089147. The next prime is 1211089153. The reversal of 1211089152 is 2519801121.

It is not an unprimeable number, because it can be changed into a prime (1211089153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28164843 + ... + 28164885.

Almost surely, 2^1211089152 is an apocalyptic number.

1211089152 is a gapful number since it is divisible by the number (12) 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 1211089152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106660864).

1211089152 is an abundant number, since it is smaller than the sum of its proper divisors (3002232576).

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

1211089152 is a wasteful number, since it uses less digits than its factorization.

1211089152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 30.

The square root of 1211089152 is about 34800.7061997311. The cubic root of 1211089152 is about 1065.9218661749.

The spelling of 1211089152 in words is "one billion, two hundred eleven million, eighty-nine thousand, one hundred fifty-two".