1210989132 has 36 divisors (see below), whose sum is σ = 3143847616. Its totient is φ = 392752800.

The previous prime is 1210989121. The next prime is 1210989137. The reversal of 1210989132 is 2319890121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1210989132² = 2932989355644226848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1210989137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453244 + ... + 455907.

Almost surely, 2^1210989132 is an apocalyptic number.

1210989132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210989132 is an abundant number, since it is smaller than the sum of its proper divisors (1932858484).

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

1210989132 is a wasteful number, since it uses less digits than its factorization.

1210989132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909198 (or 909193 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1210989132 is about 34799.2691302562. The cubic root of 1210989132 is about 1065.8925216685.

It can be divided in two parts, 1210989 and 132, that added together give a palindrome (1211121).

The spelling of 1210989132 in words is "one billion, two hundred ten million, nine hundred eighty-nine thousand, one hundred thirty-two".