106212108891 has 48 divisors (see below), whose sum is σ = 170124684288. Its totient is φ = 58709448000.

The previous prime is 106212108851. The next prime is 106212108901. The reversal of 106212108891 is 198801212601.

It is not a de Polignac number, because 106212108891 - 2¹¹ = 106212106843 is a prime.

It is a super-2 number, since 2×106212108891² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106212108851) 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, 16461216 + ... + 16467666.

It is an arithmetic number, because the mean of its divisors is an integer number (3544264256).

Almost surely, 2^106212108891 is an apocalyptic number.

106212108891 is a deficient number, since it is larger than the sum of its proper divisors (63912575397).

106212108891 is a wasteful number, since it uses less digits than its factorization.

106212108891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112 (or 10105 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 39.

The spelling of 106212108891 in words is "one hundred six billion, two hundred twelve million, one hundred eight thousand, eight hundred ninety-one".