101221252012 has 12 divisors (see below), whose sum is σ = 177139422936. Its totient is φ = 50609988320.

The previous prime is 101221252001. The next prime is 101221252043. The reversal of 101221252012 is 210252122101.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510768 + ... + 680680.

It is an arithmetic number, because the mean of its divisors is an integer number (14761618578).

Almost surely, 2^101221252012 is an apocalyptic number.

It is an amenable number.

101221252012 is a deficient number, since it is larger than the sum of its proper divisors (75918170924).

101221252012 is a wasteful number, since it uses less digits than its factorization.

101221252012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318848 (or 318846 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 101221252012 its reverse (210252122101), we get a palindrome (311473374113).

The spelling of 101221252012 in words is "one hundred one billion, two hundred twenty-one million, two hundred fifty-two thousand, twelve".