2145212132 has 48 divisors (see below), whose sum is σ = 4372220160. Its totient is φ = 901929600.

The previous prime is 2145212101. The next prime is 2145212141. The reversal of 2145212132 is 2312125412.

It is a junction number, because it is equal to n+sod(n) for n = 2145212098 and 2145212107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748382 + ... + 751242.

It is an arithmetic number, because the mean of its divisors is an integer number (91087920).

Almost surely, 2^2145212132 is an apocalyptic number.

It is an amenable number.

2145212132 is an abundant number, since it is smaller than the sum of its proper divisors (2227008028).

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

2145212132 is a wasteful number, since it uses less digits than its factorization.

2145212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3370 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2145212132 is about 46316.4347937101. The cubic root of 2145212132 is about 1289.7041029561.

Adding to 2145212132 its reverse (2312125412), we get a palindrome (4457337544).

The spelling of 2145212132 in words is "two billion, one hundred forty-five million, two hundred twelve thousand, one hundred thirty-two".