111212000101 has 4 divisors (see below), whose sum is σ = 111282433600. Its totient is φ = 111141566604.

The previous prime is 111212000099. The next prime is 111212000117. The reversal of 111212000101 is 101000212111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101000212111 = 857 ⋅117853223.

It is a cyclic number.

It is not a de Polignac number, because 111212000101 - 2¹ = 111212000099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212030101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35214381 + ... + 35217538.

It is an arithmetic number, because the mean of its divisors is an integer number (27820608400).

Almost surely, 2^111212000101 is an apocalyptic number.

It is an amenable number.

111212000101 is a deficient number, since it is larger than the sum of its proper divisors (70433499).

111212000101 is an equidigital number, since it uses as much as digits as its factorization.

111212000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70433498.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111212000101 its reverse (101000212111), we get a palindrome (212212212212).

It can be divided in two parts, 111 and 212000101, that added together give a palindrome (212000212).

The spelling of 111212000101 in words is "one hundred eleven billion, two hundred twelve million, one hundred one", and thus it is an aban number.