111211212000101 has 4 divisors (see below), whose sum is σ = 111211773143052. Its totient is φ = 111210650857152.

The previous prime is 111211212000073. The next prime is 111211212000137. The reversal of 111211212000101 is 101000212112111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17471346655876 + 93739865344225 = 4179874^2 + 9681935^2 .

It is a cyclic number.

It is not a de Polignac number, because 111211212000101 - 2¹⁴ = 111211211983717 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 (111211212000151) 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, 280274090 + ... + 280670603.

It is an arithmetic number, because the mean of its divisors is an integer number (27802943285763).

Almost surely, 2^{111211212000101} is an apocalyptic number.

It is an amenable number.

111211212000101 is a deficient number, since it is larger than the sum of its proper divisors (561142951).

111211212000101 is an equidigital number, since it uses as much as digits as its factorization.

111211212000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561142950.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111211212000101 its reverse (101000212112111), we get a palindrome (212211424112212).

The spelling of 111211212000101 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twelve million, one hundred one", and thus it is an aban number.