121223000 has 64 divisors (see below), whose sum is σ = 285405120. Its totient is φ = 48192000.

The previous prime is 121222999. The next prime is 121223017. The reversal of 121223000 is 322121.

It is a happy number.

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, 240749 + ... + 241251.

It is an arithmetic number, because the mean of its divisors is an integer number (4459455).

Almost surely, 2^121223000 is an apocalyptic number.

121223000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142702560).

121223000 is an abundant number, since it is smaller than the sum of its proper divisors (164182120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121223000 is a wasteful number, since it uses less digits than its factorization.

121223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121223000 is about 11010.1316976683. The cubic root of 121223000 is about 494.9124084037.

Adding to 121223000 its reverse (322121), we get a palindrome (121545121).

The spelling of 121223000 in words is "one hundred twenty-one million, two hundred twenty-three thousand".