212101102220111 has 32 divisors (see below), whose sum is σ = 232180240376448. Its totient is φ = 192585935093760.

The previous prime is 212101102220017. The next prime is 212101102220113. The reversal of 212101102220111 is 111022201101212.

It is not a de Polignac number, because 212101102220111 - 2²² = 212101098025807 is a prime.

It is a super-3 number, since 3×212101102220111³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212101102220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101102220113) 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, 639122255 + ... + 639454031.

It is an arithmetic number, because the mean of its divisors is an integer number (7255632511764).

Almost surely, 2^{212101102220111} is an apocalyptic number.

212101102220111 is a deficient number, since it is larger than the sum of its proper divisors (20079138156337).

212101102220111 is a wasteful number, since it uses less digits than its factorization.

212101102220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335091.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212101102220111 its reverse (111022201101212), we get a palindrome (323123303321323).

The spelling of 212101102220111 in words is "two hundred twelve trillion, one hundred one billion, one hundred two million, two hundred twenty thousand, one hundred eleven".