1223498220 has 192 divisors, whose sum is σ = 4041225216. Its totient is φ = 270766080.

The previous prime is 1223498209. The next prime is 1223498231. The reversal of 1223498220 is 228943221.

1223498220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1223498209) and next prime (1223498231).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3908784 + ... + 3909096.

It is an arithmetic number, because the mean of its divisors is an integer number (21048048).

Almost surely, 2^1223498220 is an apocalyptic number.

1223498220 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 1223498220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2020612608).

1223498220 is an abundant number, since it is smaller than the sum of its proper divisors (2817726996).

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

1223498220 is a wasteful number, since it uses less digits than its factorization.

1223498220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1223498220 is about 34978.5394206219. The cubic root of 1223498220 is about 1069.5500539267.

The spelling of 1223498220 in words is "one billion, two hundred twenty-three million, four hundred ninety-eight thousand, two hundred twenty".