2102211212212 has 6 divisors (see below), whose sum is σ = 3678869621378. Its totient is φ = 1051105606104.

The previous prime is 2102211212191. The next prime is 2102211212219. The reversal of 2102211212212 is 2122121122012.

It can be written as a sum of positive squares in only one way, i.e., 2041909534116 + 60301678096 = 1428954^2 + 245564^2 .

It is a super-4 number, since 4×2102211212212⁴ (a number of 50 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2102211212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102211212219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262776401523 + ... + 262776401530.

Almost surely, 2^{2102211212212} is an apocalyptic number.

It is an amenable number.

2102211212212 is a deficient number, since it is larger than the sum of its proper divisors (1576658409166).

2102211212212 is a wasteful number, since it uses less digits than its factorization.

2102211212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525552803057 (or 525552803055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2102211212212 its reverse (2122121122012), we get a palindrome (4224332334224).

The spelling of 2102211212212 in words is "two trillion, one hundred two billion, two hundred eleven million, two hundred twelve thousand, two hundred twelve".