100212172 has 6 divisors (see below), whose sum is σ = 175371308. Its totient is φ = 50106084.

The previous prime is 100212163. The next prime is 100212223. The reversal of 100212172 is 271212001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12526518 + ... + 12526525.

Almost surely, 2^100212172 is an apocalyptic number.

It is an amenable number.

100212172 is a deficient number, since it is larger than the sum of its proper divisors (75159136).

100212172 is a wasteful number, since it uses less digits than its factorization.

100212172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25053047 (or 25053045 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 100212172 is about 10010.6029788420. The cubic root of 100212172 is about 464.4869231963.

Adding to 100212172 its reverse (271212001), we get a palindrome (371424173).

The spelling of 100212172 in words is "one hundred million, two hundred twelve thousand, one hundred seventy-two".