2211212101212 has 18 divisors (see below), whose sum is σ = 5589452811488. Its totient is φ = 737070700392.

The previous prime is 2211212101193. The next prime is 2211212101223. The reversal of 2211212101212 is 2121012121122.

2211212101212 is a `hidden beast` number, since 221 + 1 + 21 + 210 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30711279148 + ... + 30711279219.

Almost surely, 2^{2211212101212} is an apocalyptic number.

It is an amenable number.

2211212101212 is an abundant number, since it is smaller than the sum of its proper divisors (3378240710276).

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

2211212101212 is a wasteful number, since it uses less digits than its factorization.

2211212101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61422558377 (or 61422558372 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211212101212 its reverse (2121012121122), we get a palindrome (4332224222334).

The spelling of 2211212101212 in words is "two trillion, two hundred eleven billion, two hundred twelve million, one hundred one thousand, two hundred twelve".