1210211110212 has 96 divisors (see below), whose sum is σ = 3223469136384. Its totient is φ = 350082969600.

The previous prime is 1210211110123. The next prime is 1210211110231. The reversal of 1210211110212 is 2120111120121.

It is a happy number.

It is a super-2 number, since 2×1210211110212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210211110191 and 1210211110200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2165512 + ... + 2666432.

It is an arithmetic number, because the mean of its divisors is an integer number (33577803504).

Almost surely, 2^{1210211110212} is an apocalyptic number.

1210211110212 is a gapful number since it is divisible by the number (12) 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 1210211110212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611734568192).

1210211110212 is an abundant number, since it is smaller than the sum of its proper divisors (2013258026172).

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

1210211110212 is a wasteful number, since it uses less digits than its factorization.

1210211110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501869 (or 501867 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1210211110212 its reverse (2120111120121), we get a palindrome (3330322230333).

Subtracting 1210211110212 from its reverse (2120111120121), we obtain a palindrome (909900009909).

The spelling of 1210211110212 in words is "one trillion, two hundred ten billion, two hundred eleven million, one hundred ten thousand, two hundred twelve".