1211211002222 has 32 divisors (see below), whose sum is σ = 1959810098400. Its totient is φ = 558095966208.

The previous prime is 1211211002191. The next prime is 1211211002227. The reversal of 1211211002222 is 2222001121121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211211002222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211211002227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40172429 + ... + 40202567.

It is an arithmetic number, because the mean of its divisors is an integer number (61244065575).

Almost surely, 2^{1211211002222} is an apocalyptic number.

1211211002222 is a deficient number, since it is larger than the sum of its proper divisors (748599096178).

1211211002222 is a wasteful number, since it uses less digits than its factorization.

1211211002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32660.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211211002222 its reverse (2222001121121), we get a palindrome (3433212123343).

The spelling of 1211211002222 in words is "one trillion, two hundred eleven billion, two hundred eleven million, two thousand, two hundred twenty-two".