121223444 has 6 divisors (see below), whose sum is σ = 212141034. Its totient is φ = 60611720.

The previous prime is 121223419. The next prime is 121223461. The reversal of 121223444 is 444322121.

It can be written as a sum of positive squares in only one way, i.e., 90973444 + 30250000 = 9538^2 + 5500^2 .

It is a super-2 number, since 2×121223444² = 29390246750442272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152927 + ... + 15152934.

It is an arithmetic number, because the mean of its divisors is an integer number (35356839).

Almost surely, 2^121223444 is an apocalyptic number.

It is an amenable number.

121223444 is a deficient number, since it is larger than the sum of its proper divisors (90917590).

121223444 is a wasteful number, since it uses less digits than its factorization.

121223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305865 (or 30305863 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 121223444 is about 11010.1518608964. The cubic root of 121223444 is about 494.9130126367.

Adding to 121223444 its reverse (444322121), we get a palindrome (565545565).

The spelling of 121223444 in words is "one hundred twenty-one million, two hundred twenty-three thousand, four hundred forty-four".