101023111212 has 12 divisors (see below), whose sum is σ = 235720592856. Its totient is φ = 33674370400.

The previous prime is 101023111141. The next prime is 101023111219. The reversal of 101023111212 is 212111320101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 101023111191 and 101023111200.

It is not an unprimeable number, because it can be changed into a prime (101023111219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4209296289 + ... + 4209296312.

It is an arithmetic number, because the mean of its divisors is an integer number (19643382738).

Almost surely, 2^101023111212 is an apocalyptic number.

101023111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101023111212 is an abundant number, since it is smaller than the sum of its proper divisors (134697481644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101023111212 is a wasteful number, since it uses less digits than its factorization.

101023111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418592608 (or 8418592606 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 101023111212 its reverse (212111320101), we get a palindrome (313134431313).

The spelling of 101023111212 in words is "one hundred one billion, twenty-three million, one hundred eleven thousand, two hundred twelve".