1223250020 has 48 divisors (see below), whose sum is σ = 2707320000. Its totient is φ = 462983040.

The previous prime is 1223250013. The next prime is 1223250023. The reversal of 1223250020 is 200523221.

It is a super-2 number, since 2×1223250020² = 2992681222860000800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223250023) 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, 443606 + ... + 446354.

It is an arithmetic number, because the mean of its divisors is an integer number (56402500).

Almost surely, 2^1223250020 is an apocalyptic number.

1223250020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223250020 is an abundant number, since it is smaller than the sum of its proper divisors (1484069980).

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

1223250020 is a wasteful number, since it uses less digits than its factorization.

1223250020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948 (or 3946 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1223250020 is about 34974.9913509639. The cubic root of 1223250020 is about 1069.4777257255.

Adding to 1223250020 its reverse (200523221), we get a palindrome (1423773241).

The spelling of 1223250020 in words is "one billion, two hundred twenty-three million, two hundred fifty thousand, twenty".