212111110101 has 48 divisors (see below), whose sum is σ = 319866744960. Its totient is φ = 124876752000.

The previous prime is 212111110087. The next prime is 212111110111. The reversal of 212111110101 is 101011111212.

It is not a de Polignac number, because 212111110101 - 2¹⁸ = 212110847957 is a prime.

It is a super-2 number, since 2×212111110101² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111110111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1888560 + ... + 1997718.

It is an arithmetic number, because the mean of its divisors is an integer number (6663890520).

Almost surely, 2^212111110101 is an apocalyptic number.

It is an amenable number.

212111110101 is a deficient number, since it is larger than the sum of its proper divisors (107755634859).

212111110101 is a wasteful number, since it uses less digits than its factorization.

212111110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109338 (or 109327 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 212111110101 its reverse (101011111212), we get a palindrome (313122221313).

The spelling of 212111110101 in words is "two hundred twelve billion, one hundred eleven million, one hundred ten thousand, one hundred one".