213145111132 has 12 divisors (see below), whose sum is σ = 373307455080. Its totient is φ = 106485838256.

The previous prime is 213145111129. The next prime is 213145111247. The reversal of 213145111132 is 231111541312.

It is a junction number, because it is equal to n+sod(n) for n = 213145111097 and 213145111106.

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, 21673798 + ... + 21683629.

It is an arithmetic number, because the mean of its divisors is an integer number (31108954590).

Almost surely, 2^213145111132 is an apocalyptic number.

It is an amenable number.

213145111132 is a deficient number, since it is larger than the sum of its proper divisors (160162343948).

213145111132 is a wasteful number, since it uses less digits than its factorization.

213145111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43358660 (or 43358658 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

Adding to 213145111132 its reverse (231111541312), we get a palindrome (444256652444).

The spelling of 213145111132 in words is "two hundred thirteen billion, one hundred forty-five million, one hundred eleven thousand, one hundred thirty-two".