1011211230212 has 6 divisors (see below), whose sum is σ = 1769619652878. Its totient is φ = 505605615104.

The previous prime is 1011211230143. The next prime is 1011211230223. The reversal of 1011211230212 is 2120321121101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 635422613956 + 375788616256 = 797134^2 + 613016^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126401403773 + ... + 126401403780.

It is an arithmetic number, because the mean of its divisors is an integer number (294936608813).

Almost surely, 2^{1011211230212} is an apocalyptic number.

It is an amenable number.

1011211230212 is a deficient number, since it is larger than the sum of its proper divisors (758408422666).

1011211230212 is a wasteful number, since it uses less digits than its factorization.

1011211230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252802807557 (or 252802807555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1011211230212 its reverse (2120321121101), we get a palindrome (3131532351313).

The spelling of 1011211230212 in words is "one trillion, eleven billion, two hundred eleven million, two hundred thirty thousand, two hundred twelve".