1021121232 has 20 divisors (see below), whose sum is σ = 2637896640. Its totient is φ = 340373728.

The previous prime is 1021121209. The next prime is 1021121243. The reversal of 1021121232 is 2321211201.

1021121232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10636632 + ... + 10636727.

It is an arithmetic number, because the mean of its divisors is an integer number (131894832).

Almost surely, 2^1021121232 is an apocalyptic number.

1021121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021121232 is an abundant number, since it is smaller than the sum of its proper divisors (1616775408).

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

1021121232 is a wasteful number, since it uses less digits than its factorization.

1021121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21273370 (or 21273364 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1021121232 is about 31954.9875919237. The cubic root of 1021121232 is about 1006.9914168439.

Adding to 1021121232 its reverse (2321211201), we get a palindrome (3342332433).

The spelling of 1021121232 in words is "one billion, twenty-one million, one hundred twenty-one thousand, two hundred thirty-two".