612212020 has 48 divisors (see below), whose sum is σ = 1471091328. Its totient is φ = 209646720.

The previous prime is 612211997. The next prime is 612212021. The reversal of 612212020 is 20212216.

It is a junction number, because it is equal to n+sod(n) for n = 612211985 and 612212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612212021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140799 + ... + 145081.

It is an arithmetic number, because the mean of its divisors is an integer number (30647736).

Almost surely, 2^612212020 is an apocalyptic number.

It is an amenable number.

612212020 is an abundant number, since it is smaller than the sum of its proper divisors (858879308).

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

612212020 is a wasteful number, since it uses less digits than its factorization.

612212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 612212020 is about 24742.9185828996. The cubic root of 612212020 is about 849.1165076192.

Adding to 612212020 its reverse (20212216), we get a palindrome (632424236).

The spelling of 612212020 in words is "six hundred twelve million, two hundred twelve thousand, twenty".