212111010126 has 40 divisors (see below), whose sum is σ = 475825586544. Its totient is φ = 70623368640.

The previous prime is 212111010101. The next prime is 212111010149. The reversal of 212111010126 is 621010111212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212111010099 and 212111010108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 600370 + ... + 885813.

Almost surely, 2^212111010126 is an apocalyptic number.

212111010126 is an abundant number, since it is smaller than the sum of its proper divisors (263714576418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212111010126 is a wasteful number, since it uses less digits than its factorization.

212111010126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487078 (or 1487069 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 212111010126 its reverse (621010111212), we get a palindrome (833121121338).

The spelling of 212111010126 in words is "two hundred twelve billion, one hundred eleven million, ten thousand, one hundred twenty-six".