1231003220212 has 6 divisors (see below), whose sum is σ = 2154255635378. Its totient is φ = 615501610104.

The previous prime is 1231003220171. The next prime is 1231003220221. The reversal of 1231003220212 is 2120223001321.

It can be written as a sum of positive squares in only one way, i.e., 908826648976 + 322176571236 = 953324^2 + 567606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1231003220212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153875402523 + ... + 153875402530.

Almost surely, 2^{1231003220212} is an apocalyptic number.

It is an amenable number.

1231003220212 is a deficient number, since it is larger than the sum of its proper divisors (923252415166).

1231003220212 is a wasteful number, since it uses less digits than its factorization.

1231003220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307750805057 (or 307750805055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1231003220212 its reverse (2120223001321), we get a palindrome (3351226221533).

The spelling of 1231003220212 in words is "one trillion, two hundred thirty-one billion, three million, two hundred twenty thousand, two hundred twelve".