1220003012 has 6 divisors (see below), whose sum is σ = 2135005278. Its totient is φ = 610001504.

The previous prime is 1220002999. The next prime is 1220003023. The reversal of 1220003012 is 2103000221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1187215936 + 32787076 = 34456^2 + 5726^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220002984 and 1220003002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152500373 + ... + 152500380.

It is an arithmetic number, because the mean of its divisors is an integer number (355834213).

Almost surely, 2^1220003012 is an apocalyptic number.

It is an amenable number.

1220003012 is a deficient number, since it is larger than the sum of its proper divisors (915002266).

1220003012 is a wasteful number, since it uses less digits than its factorization.

1220003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305000757 (or 305000755 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1220003012 is about 34928.5415097739. The cubic root of 1220003012 is about 1068.5306094956.

Adding to 1220003012 its reverse (2103000221), we get a palindrome (3323003233).

The spelling of 1220003012 in words is "one billion, two hundred twenty million, three thousand, twelve".