212040001020 has 24 divisors (see below), whose sum is σ = 593712003024. Its totient is φ = 56544000256.

The previous prime is 212040001013. The next prime is 212040001021. The reversal of 212040001020 is 20100040212.

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 = 212040000987 and 212040001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212040001021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766999949 + ... + 1767000068.

It is an arithmetic number, because the mean of its divisors is an integer number (24738000126).

Almost surely, 2^212040001020 is an apocalyptic number.

212040001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212040001020 is an abundant number, since it is smaller than the sum of its proper divisors (381672002004).

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

212040001020 is a wasteful number, since it uses less digits than its factorization.

212040001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534000029 (or 3534000027 counting only the distinct ones).

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

Adding to 212040001020 its reverse (20100040212), we get a palindrome (232140041232).

The spelling of 212040001020 in words is "two hundred twelve billion, forty million, one thousand, twenty".