1021212132 has 24 divisors (see below), whose sum is σ = 2383349472. Its totient is φ = 340329600.

The previous prime is 1021212131. The next prime is 1021212139. The reversal of 1021212132 is 2312121201.

It is not an unprimeable number, because it can be changed into a prime (1021212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91707 + ... + 102237.

It is an arithmetic number, because the mean of its divisors is an integer number (99306228).

Almost surely, 2^1021212132 is an apocalyptic number.

1021212132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021212132 is an abundant number, since it is smaller than the sum of its proper divisors (1362137340).

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

1021212132 is a wasteful number, since it uses less digits than its factorization.

1021212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18619 (or 18617 counting only the distinct ones).

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

The square root of 1021212132 is about 31956.4098734511. The cubic root of 1021212132 is about 1007.0212966796.

Adding to 1021212132 its reverse (2312121201), we get a palindrome (3333333333).

The spelling of 1021212132 in words is "one billion, twenty-one million, two hundred twelve thousand, one hundred thirty-two".