101211442012 has 48 divisors (see below), whose sum is σ = 190057099680. Its totient is φ = 46990927872.

The previous prime is 101211442009. The next prime is 101211442061. The reversal of 101211442012 is 210244112101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4260664 + ... + 4284352.

It is an arithmetic number, because the mean of its divisors is an integer number (3959522910).

Almost surely, 2^101211442012 is an apocalyptic number.

It is an amenable number.

101211442012 is a deficient number, since it is larger than the sum of its proper divisors (88845657668).

101211442012 is a wasteful number, since it uses less digits than its factorization.

101211442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24550 (or 24548 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101211442012 its reverse (210244112101), we get a palindrome (311455554113).

The spelling of 101211442012 in words is "one hundred one billion, two hundred eleven million, four hundred forty-two thousand, twelve".