1022211111212 has 6 divisors (see below), whose sum is σ = 1788869444628. Its totient is φ = 511105555604.

The previous prime is 1022211111157. The next prime is 1022211111217. The reversal of 1022211111212 is 2121111122201.

It is not an unprimeable number, because it can be changed into a prime (1022211111217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127776388898 + ... + 127776388905.

It is an arithmetic number, because the mean of its divisors is an integer number (298144907438).

Almost surely, 2^{1022211111212} is an apocalyptic number.

It is an amenable number.

1022211111212 is a deficient number, since it is larger than the sum of its proper divisors (766658333416).

1022211111212 is a wasteful number, since it uses less digits than its factorization.

1022211111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255552777807 (or 255552777805 counting only the distinct ones).

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

Adding to 1022211111212 its reverse (2121111122201), we get a palindrome (3143322233413).

It can be divided in two parts, 10 and 22211111212, that added together give a palindrome (22211111222).

The spelling of 1022211111212 in words is "one trillion, twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred twelve".