1221210112022 has 32 divisors (see below), whose sum is σ = 1926259211520. Its totient is φ = 579820913280.

The previous prime is 1221210111991. The next prime is 1221210112027. The reversal of 1221210112022 is 2202110121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221210112027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52340123 + ... + 52363449.

It is an arithmetic number, because the mean of its divisors is an integer number (60195600360).

Almost surely, 2^{1221210112022} is an apocalyptic number.

1221210112022 is a deficient number, since it is larger than the sum of its proper divisors (705049099498).

1221210112022 is a wasteful number, since it uses less digits than its factorization.

1221210112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38216.

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

Adding to 1221210112022 its reverse (2202110121221), we get a palindrome (3423320233243).

The spelling of 1221210112022 in words is "one trillion, two hundred twenty-one billion, two hundred ten million, one hundred twelve thousand, twenty-two".