1212020 has 12 divisors (see below), whose sum is σ = 2545284. Its totient is φ = 484800.

The previous prime is 1212017. The next prime is 1212023. The reversal of 1212020 is 202121.

It is an interprime number because it is at equal distance from previous prime (1212017) and next prime (1212023).

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 343396 = 932^2 + 586^2 .

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1211989 and 1212007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30281 + ... + 30320.

It is an arithmetic number, because the mean of its divisors is an integer number (212107).

2^1212020 is an apocalyptic number.

1212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212020 is an abundant number, since it is smaller than the sum of its proper divisors (1333264).

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

1212020 is a wasteful number, since it uses less digits than its factorization.

1212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60610 (or 60608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1212020 is about 1100.9177989296. The cubic root of 1212020 is about 106.6194886852.

Adding to 1212020 its reverse (202121), we get a palindrome (1414141).

The spelling of 1212020 in words is "one million, two hundred twelve thousand, twenty".