1221112201022 has 32 divisors (see below), whose sum is σ = 2163672698880. Its totient is φ = 505793341440.

The previous prime is 1221112201003. The next prime is 1221112201031. The reversal of 1221112201022 is 2201022111221.

It is a super-2 number, since 2×1221112201022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495658 + ... + 2163149.

It is an arithmetic number, because the mean of its divisors is an integer number (67614771840).

Almost surely, 2^{1221112201022} is an apocalyptic number.

1221112201022 is a deficient number, since it is larger than the sum of its proper divisors (942560497858).

1221112201022 is a wasteful number, since it uses less digits than its factorization.

1221112201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659616.

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

Adding to 1221112201022 its reverse (2201022111221), we get a palindrome (3422134312243).

The spelling of 1221112201022 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, two hundred one thousand, twenty-two".