1212312020 has 12 divisors (see below), whose sum is σ = 2545855284. Its totient is φ = 484924800.

The previous prime is 1212312019. The next prime is 1212312053. The reversal of 1212312020 is 202132121.

It is a happy number.

1212312020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 241740304 + 970571716 = 15548^2 + 31154^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212311986 and 1212312004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30307781 + ... + 30307820.

It is an arithmetic number, because the mean of its divisors is an integer number (212154607).

Almost surely, 2^1212312020 is an apocalyptic number.

1212312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212312020 is an abundant number, since it is smaller than the sum of its proper divisors (1333543264).

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

1212312020 is a wasteful number, since it uses less digits than its factorization.

1212312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60615610 (or 60615608 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212312020 is about 34818.2713528400. The cubic root of 1212312020 is about 1066.2805084391.

Adding to 1212312020 its reverse (202132121), we get a palindrome (1414444141).

The spelling of 1212312020 in words is "one billion, two hundred twelve million, three hundred twelve thousand, twenty".