1212222211002 has 64 divisors (see below), whose sum is σ = 2939535083520. Its totient is φ = 367238242800.

The previous prime is 1212222210967. The next prime is 1212222211027. The reversal of 1212222211002 is 2001122222121.

It is a happy number.

1212222211002 is a `hidden beast` number, since 121 + 222 + 221 + 100 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1875793 + ... + 2437835.

It is an arithmetic number, because the mean of its divisors is an integer number (45930235680).

Almost surely, 2^{1212222211002} is an apocalyptic number.

1212222211002 is an abundant number, since it is smaller than the sum of its proper divisors (1727312872518).

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

1212222211002 is a wasteful number, since it uses less digits than its factorization.

1212222211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565696 (or 565690 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212222211002 its reverse (2001122222121), we get a palindrome (3213344433123).

The spelling of 1212222211002 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, two".