1212222221202 has 16 divisors (see below), whose sum is σ = 2442951653472. Its totient is φ = 400989538560.

The previous prime is 1212222221179. The next prime is 1212222221207. The reversal of 1212222221202 is 2021222222121.

It is not an unprimeable number, because it can be changed into a prime (1212222221207) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 771132943 + ... + 771134514.

It is an arithmetic number, because the mean of its divisors is an integer number (152684478342).

Almost surely, 2^{1212222221202} is an apocalyptic number.

1212222221202 is an abundant number, since it is smaller than the sum of its proper divisors (1230729432270).

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

1212222221202 is a wasteful number, since it uses less digits than its factorization.

1212222221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542267593.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1212222221202 its reverse (2021222222121), we get a palindrome (3233444443323).

The spelling of 1212222221202 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred two".