212110111111101 has 32 divisors (see below), whose sum is σ = 340230750504960. Its totient is φ = 114825174336576.

The previous prime is 212110111111097. The next prime is 212110111111123. The reversal of 212110111111101 is 101111111011212.

It is a happy number.

It is not a de Polignac number, because 212110111111101 - 2² = 212110111111097 is a prime.

It is a super-2 number, since 2×212110111111101² (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 (212110111111141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31274160 + ... + 37447206.

It is an arithmetic number, because the mean of its divisors is an integer number (10632210953280).

Almost surely, 2^{212110111111101} is an apocalyptic number.

212110111111101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212110111111101 is a deficient number, since it is larger than the sum of its proper divisors (128120639393859).

212110111111101 is a wasteful number, since it uses less digits than its factorization.

212110111111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259193.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 212110111111101 its reverse (101111111011212), we get a palindrome (313221222122313).

The spelling of 212110111111101 in words is "two hundred twelve trillion, one hundred ten billion, one hundred eleven million, one hundred eleven thousand, one hundred one".