1211212110212 has 24 divisors (see below), whose sum is σ = 2287868721600. Its totient is φ = 557747567136.

The previous prime is 1211212110187. The next prime is 1211212110259. The reversal of 1211212110212 is 2120112121121.

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, 26506262 + ... + 26551917.

It is an arithmetic number, because the mean of its divisors is an integer number (95327863400).

Almost surely, 2^{1211212110212} is an apocalyptic number.

It is an amenable number.

1211212110212 is a deficient number, since it is larger than the sum of its proper divisors (1076656611388).

1211212110212 is a wasteful number, since it uses less digits than its factorization.

1211212110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53058635 (or 53058633 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1211212110212 its reverse (2120112121121), we get a palindrome (3331324231333).

The spelling of 1211212110212 in words is "one trillion, two hundred eleven billion, two hundred twelve million, one hundred ten thousand, two hundred twelve".