101100001212 has 36 divisors (see below), whose sum is σ = 292066670896. Its totient is φ = 28885714560.

The previous prime is 101100001169. The next prime is 101100001259. The reversal of 101100001212 is 212100001101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101100001194 and 101100001203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200594989 + ... + 200595492.

Almost surely, 2^101100001212 is an apocalyptic number.

101100001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101100001212 is an abundant number, since it is smaller than the sum of its proper divisors (190966669684).

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

101100001212 is a wasteful number, since it uses less digits than its factorization.

101100001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401190498 (or 401190493 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101100001212 its reverse (212100001101), we get a palindrome (313200002313).

The spelling of 101100001212 in words is "one hundred one billion, one hundred million, one thousand, two hundred twelve".