12244642020 has 480 divisors, whose sum is σ = 45735072768. Its totient is φ = 2711605248.

The previous prime is 12244642009. The next prime is 12244642021. The reversal of 12244642020 is 2024644221.

12244642020 is a `hidden beast` number, since 12 + 2 + 4 + 4 + 642 + 0 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12244642021) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8233717 + ... + 8235203.

Almost surely, 2^12244642020 is an apocalyptic number.

12244642020 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 12244642020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22867536384).

12244642020 is an abundant number, since it is smaller than the sum of its proper divisors (33490430748).

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

12244642020 is a wasteful number, since it uses less digits than its factorization.

12244642020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The spelling of 12244642020 in words is "twelve billion, two hundred forty-four million, six hundred forty-two thousand, twenty".