101821612 has 6 divisors (see below), whose sum is σ = 178187828. Its totient is φ = 50910804.

The previous prime is 101821591. The next prime is 101821631. The reversal of 101821612 is 216128101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727698 + ... + 12727705.

Almost surely, 2^101821612 is an apocalyptic number.

It is an amenable number.

101821612 is a deficient number, since it is larger than the sum of its proper divisors (76366216).

101821612 is a wasteful number, since it uses less digits than its factorization.

101821612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25455407 (or 25455405 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 101821612 is about 10090.6695516204. The cubic root of 101821612 is about 466.9603323957.

Adding to 101821612 its reverse (216128101), we get a palindrome (317949713).

The spelling of 101821612 in words is "one hundred one million, eight hundred twenty-one thousand, six hundred twelve".