1123214421 has 16 divisors (see below), whose sum is σ = 1712076800. Its totient is φ = 641644848.

The previous prime is 1123214383. The next prime is 1123214423. The reversal of 1123214421 is 1244123211.

It is a de Polignac number, because none of the positive numbers 2^k-1123214421 is a prime.

It is a super-2 number, since 2×1123214421² = 2523221271084730482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123214423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94320 + ... + 105558.

It is an arithmetic number, because the mean of its divisors is an integer number (107004800).

Almost surely, 2^1123214421 is an apocalyptic number.

It is an amenable number.

1123214421 is a deficient number, since it is larger than the sum of its proper divisors (588862379).

1123214421 is a wasteful number, since it uses less digits than its factorization.

1123214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16008.

The product of its digits is 384, while the sum is 21.

The square root of 1123214421 is about 33514.3912521174. The cubic root of 1123214421 is about 1039.4913751202.

Adding to 1123214421 its reverse (1244123211), we get a palindrome (2367337632).

The spelling of 1123214421 in words is "one billion, one hundred twenty-three million, two hundred fourteen thousand, four hundred twenty-one".