211212011010 has 512 divisors, whose sum is σ = 705225056256. Its totient is φ = 39392179200.

The previous prime is 211212010993. The next prime is 211212011011. The reversal of 211212011010 is 10110212112.

It is a super-2 number, since 2×211212011010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212011011) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 134443525 + ... + 134445095.

It is an arithmetic number, because the mean of its divisors is an integer number (1377392688).

Almost surely, 2^211212011010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211212011010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352612528128).

211212011010 is an abundant number, since it is smaller than the sum of its proper divisors (494013045246).

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

211212011010 is a wasteful number, since it uses less digits than its factorization.

211212011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211212011010 its reverse (10110212112), we get a palindrome (221322223122).

The spelling of 211212011010 in words is "two hundred eleven billion, two hundred twelve million, eleven thousand, ten".