1220212124 has 6 divisors (see below), whose sum is σ = 2135371224. Its totient is φ = 610106060.

The previous prime is 1220212121. The next prime is 1220212171. The reversal of 1220212124 is 4212120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212121) by changing a digit.

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 as a sum of consecutive naturals, namely, 152526512 + ... + 152526519.

It is an arithmetic number, because the mean of its divisors is an integer number (355895204).

Almost surely, 2^1220212124 is an apocalyptic number.

It is an amenable number.

1220212124 is a deficient number, since it is larger than the sum of its proper divisors (915159100).

1220212124 is a wasteful number, since it uses less digits than its factorization.

1220212124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305053035 (or 305053033 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1220212124 is about 34931.5348073914. The cubic root of 1220212124 is about 1068.5916557404.

Adding to 1220212124 its reverse (4212120221), we get a palindrome (5432332345).

The spelling of 1220212124 in words is "one billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-four".