212123151532 has 24 divisors (see below), whose sum is σ = 375130337120. Its totient is φ = 104948663040.

The previous prime is 212123151509. The next prime is 212123151547. The reversal of 212123151532 is 235151321212.

It is a self number, because there is not a number n which added to its sum of digits gives 212123151532.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549432 + ... + 852127.

Almost surely, 2^212123151532 is an apocalyptic number.

It is an amenable number.

212123151532 is a deficient number, since it is larger than the sum of its proper divisors (163007185588).

212123151532 is a wasteful number, since it uses less digits than its factorization.

212123151532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401961 (or 1401959 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

Adding to 212123151532 its reverse (235151321212), we get a palindrome (447274472744).

The spelling of 212123151532 in words is "two hundred twelve billion, one hundred twenty-three million, one hundred fifty-one thousand, five hundred thirty-two".