1210211111212 has 24 divisors (see below), whose sum is σ = 2199628161360. Its totient is φ = 581912184000.

The previous prime is 1210211111203. The next prime is 1210211111231. The reversal of 1210211111212 is 2121111120121.

It is a super-2 number, since 2×1210211111212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20753463 + ... + 20811694.

It is an arithmetic number, because the mean of its divisors is an integer number (91651173390).

Almost surely, 2^{1210211111212} is an apocalyptic number.

It is an amenable number.

1210211111212 is a deficient number, since it is larger than the sum of its proper divisors (989417050148).

1210211111212 is a wasteful number, since it uses less digits than its factorization.

1210211111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41565441 (or 41565439 counting only the distinct ones).

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

Adding to 1210211111212 its reverse (2121111120121), we get a palindrome (3331322231333).

The spelling of 1210211111212 in words is "one trillion, two hundred ten billion, two hundred eleven million, one hundred eleven thousand, two hundred twelve".