211212102201012 has 144 divisors (see below), whose sum is σ = 591178809940992. Its totient is φ = 63042799659840.

The previous prime is 211212102200987. The next prime is 211212102201017. The reversal of 211212102201012 is 210102201212112.

211212102201012 is a `hidden beast` number, since 211 + 2 + 1 + 210 + 220 + 10 + 12 = 666.

It is a super-2 number, since 2×211212102201012² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212102201017) 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, 303895333 + ... + 304589555.

It is an arithmetic number, because the mean of its divisors is an integer number (4105408402368).

Almost surely, 2^{211212102201012} is an apocalyptic number.

211212102201012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211212102201012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295589404970496).

211212102201012 is an abundant number, since it is smaller than the sum of its proper divisors (379966707739980).

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

211212102201012 is a wasteful number, since it uses less digits than its factorization.

211212102201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705778 (or 705773 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211212102201012 its reverse (210102201212112), we get a palindrome (421314303413124).

The spelling of 211212102201012 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred two million, two hundred one thousand, twelve".