212626261020 has 48 divisors (see below), whose sum is σ = 597120215328. Its totient is φ = 56532080640.

The previous prime is 212626261019. The next prime is 212626261021. The reversal of 212626261020 is 20162626212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212626261019) and next prime (212626261021).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212626261021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5237601 + ... + 5278040.

It is an arithmetic number, because the mean of its divisors is an integer number (12440004486).

Almost surely, 2^212626261020 is an apocalyptic number.

212626261020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212626261020 is an abundant number, since it is smaller than the sum of its proper divisors (384493954308).

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

212626261020 is a wasteful number, since it uses less digits than its factorization.

212626261020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515990 (or 10515988 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 212626261020 its reverse (20162626212), we get a palindrome (232788887232).

The spelling of 212626261020 in words is "two hundred twelve billion, six hundred twenty-six million, two hundred sixty-one thousand, twenty".