2211220211212 has 24 divisors (see below), whose sum is σ = 3919057632000. Its totient is φ = 1091508508176.

The previous prime is 2211220211183. The next prime is 2211220211231. The reversal of 2211220211212 is 2121120221122.

It is a self number, because there is not a number n which added to its sum of digits gives 2211220211212.

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, 1915912 + ... + 2844847.

It is an arithmetic number, because the mean of its divisors is an integer number (163294068000).

Almost surely, 2^{2211220211212} is an apocalyptic number.

It is an amenable number.

2211220211212 is a deficient number, since it is larger than the sum of its proper divisors (1707837420788).

2211220211212 is a wasteful number, since it uses less digits than its factorization.

2211220211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762245 (or 4762243 counting only the distinct ones).

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

Adding to 2211220211212 its reverse (2121120221122), we get a palindrome (4332340432334).

The spelling of 2211220211212 in words is "two trillion, two hundred eleven billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".