1211020332 has 24 divisors (see below), whose sum is σ = 2916867072. Its totient is φ = 390651600.

The previous prime is 1211020331. The next prime is 1211020351. The reversal of 1211020332 is 2330201121.

It is not an unprimeable number, because it can be changed into a prime (1211020331) 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 7 ways as a sum of consecutive naturals, for example, 1627344 + ... + 1628087.

It is an arithmetic number, because the mean of its divisors is an integer number (121536128).

Almost surely, 2^1211020332 is an apocalyptic number.

1211020332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211020332 is an abundant number, since it is smaller than the sum of its proper divisors (1705846740).

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

1211020332 is a wasteful number, since it uses less digits than its factorization.

1211020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255469 (or 3255467 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1211020332 is about 34799.7174126458. The cubic root of 1211020332 is about 1065.9016754971.

Adding to 1211020332 its reverse (2330201121), we get a palindrome (3541221453).

The spelling of 1211020332 in words is "one billion, two hundred eleven million, twenty thousand, three hundred thirty-two".