212747036220 has 240 divisors, whose sum is σ = 718881343488. Its totient is φ = 52515112320.

The previous prime is 212747036209. The next prime is 212747036239. The reversal of 212747036220 is 22630747212.

It is a happy number.

212747036220 is a `hidden beast` number, since 2 + 1 + 27 + 4 + 7 + 0 + 3 + 622 + 0 = 666.

It is a super-2 number, since 2×212747036220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1062967 + ... + 1247153.

Almost surely, 2^212747036220 is an apocalyptic number.

212747036220 is a gapful number since it is divisible by the number (20) 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 212747036220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359440671744).

212747036220 is an abundant number, since it is smaller than the sum of its proper divisors (506134307268).

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

212747036220 is a wasteful number, since it uses less digits than its factorization.

212747036220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184262 (or 184251 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 212747036220 in words is "two hundred twelve billion, seven hundred forty-seven million, thirty-six thousand, two hundred twenty".