12210020040 has 64 divisors (see below), whose sum is σ = 36641548800. Its totient is φ = 3254984192.

The previous prime is 12210019999. The next prime is 12210020071. The reversal of 12210020040 is 4002001221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12210019998 and 12210020025.

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, 417001 + ... + 445319.

It is an arithmetic number, because the mean of its divisors is an integer number (572524200).

Almost surely, 2^12210020040 is an apocalyptic number.

12210020040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210020040 is an abundant number, since it is smaller than the sum of its proper divisors (24431528760).

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

12210020040 is a wasteful number, since it uses less digits than its factorization.

12210020040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31926 (or 31922 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12210020040 its reverse (4002001221), we get a palindrome (16212021261).

The spelling of 12210020040 in words is "twelve billion, two hundred ten million, twenty thousand, forty".