1221123422 has 8 divisors (see below), whose sum is σ = 1836788400. Its totient is φ = 608860624.

The previous prime is 1221123419. The next prime is 1221123427. The reversal of 1221123422 is 2243211221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1221123422² = 2982284823513980168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221123394 and 1221123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221123427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849647 + ... + 851082.

It is an arithmetic number, because the mean of its divisors is an integer number (229598550).

Almost surely, 2^1221123422 is an apocalyptic number.

1221123422 is a deficient number, since it is larger than the sum of its proper divisors (615664978).

1221123422 is a wasteful number, since it uses less digits than its factorization.

1221123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701090.

The product of its digits is 384, while the sum is 20.

The square root of 1221123422 is about 34944.5764318299. The cubic root of 1221123422 is about 1068.8576103494.

Adding to 1221123422 its reverse (2243211221), we get a palindrome (3464334643).

The spelling of 1221123422 in words is "one billion, two hundred twenty-one million, one hundred twenty-three thousand, four hundred twenty-two".