111212011210101 has 16 divisors (see below), whose sum is σ = 148318024627200. Its totient is φ = 74123670857328.

The previous prime is 111212011210093. The next prime is 111212011210117. The reversal of 111212011210101 is 101012110212111.

It is not a de Polignac number, because 111212011210101 - 2³ = 111212011210093 is a prime.

It is a super-2 number, since 2×111212011210101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212011210151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304118370 + ... + 304483836.

It is an arithmetic number, because the mean of its divisors is an integer number (9269876539200).

Almost surely, 2^{111212011210101} is an apocalyptic number.

It is an amenable number.

111212011210101 is a deficient number, since it is larger than the sum of its proper divisors (37106013417099).

111212011210101 is a wasteful number, since it uses less digits than its factorization.

111212011210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389368.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111212011210101 its reverse (101012110212111), we get a palindrome (212224121422212).

The spelling of 111212011210101 in words is "one hundred eleven trillion, two hundred twelve billion, eleven million, two hundred ten thousand, one hundred one".