101111221212 has 24 divisors (see below), whose sum is σ = 235954051200. Its totient is φ = 33699759216.

The previous prime is 101111221201. The next prime is 101111221241. The reversal of 101111221212 is 212122111101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101111221191 and 101111221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390912 + ... + 595847.

It is an arithmetic number, because the mean of its divisors is an integer number (9831418800).

Almost surely, 2^101111221212 is an apocalyptic number.

101111221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101111221212 is an abundant number, since it is smaller than the sum of its proper divisors (134842829988).

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

101111221212 is a wasteful number, since it uses less digits than its factorization.

101111221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995305 (or 995303 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101111221212 its reverse (212122111101), we get a palindrome (313233332313).

The spelling of 101111221212 in words is "one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".