1221112022 has 16 divisors (see below), whose sum is σ = 2018441040. Its totient is φ = 550482912.

The previous prime is 1221112003. The next prime is 1221112069. The reversal of 1221112022 is 2202111221.

It is a super-2 number, since 2×1221112022² = 2982229140545856968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221111988 and 1221112006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544997 + ... + 547232.

It is an arithmetic number, because the mean of its divisors is an integer number (126152565).

Almost surely, 2^1221112022 is an apocalyptic number.

1221112022 is a deficient number, since it is larger than the sum of its proper divisors (797329018).

1221112022 is a wasteful number, since it uses less digits than its factorization.

1221112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092287.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1221112022 is about 34944.4133160080. The cubic root of 1221112022 is about 1068.8542841733.

Adding to 1221112022 its reverse (2202111221), we get a palindrome (3423223243).

The spelling of 1221112022 in words is "one billion, two hundred twenty-one million, one hundred twelve thousand, twenty-two".