612220616220 has 48 divisors (see below), whose sum is σ = 1714294528128. Its totient is φ = 163251516480.

The previous prime is 612220616213. The next prime is 612220616233. The reversal of 612220616220 is 22616022216.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1195047 + ... + 1628673.

It is an arithmetic number, because the mean of its divisors is an integer number (35714469336).

Almost surely, 2^612220616220 is an apocalyptic number.

612220616220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612220616220 is an abundant number, since it is smaller than the sum of its proper divisors (1102073911908).

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

612220616220 is a wasteful number, since it uses less digits than its factorization.

612220616220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457170 (or 457168 counting only the distinct ones).

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

Adding to 612220616220 its reverse (22616022216), we get a palindrome (634836638436).

The spelling of 612220616220 in words is "six hundred twelve billion, two hundred twenty million, six hundred sixteen thousand, two hundred twenty".