1022222211212 has 6 divisors (see below), whose sum is σ = 1788888869628. Its totient is φ = 511111105604.

The previous prime is 1022222211191. The next prime is 1022222211223. The reversal of 1022222211212 is 2121122222201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127777776398 + ... + 127777776405.

It is an arithmetic number, because the mean of its divisors is an integer number (298148144938).

Almost surely, 2^{1022222211212} is an apocalyptic number.

It is an amenable number.

1022222211212 is a deficient number, since it is larger than the sum of its proper divisors (766666658416).

1022222211212 is a wasteful number, since it uses less digits than its factorization.

1022222211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255555552807 (or 255555552805 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1022222211212 its reverse (2121122222201), we get a palindrome (3143344433413).

The spelling of 1022222211212 in words is "one trillion, twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".