1211021202212 has 6 divisors (see below), whose sum is σ = 2119287103878. Its totient is φ = 605510601104.

The previous prime is 1211021202199. The next prime is 1211021202271. The reversal of 1211021202212 is 2122021201121.

It can be written as a sum of positive squares in only one way, i.e., 731750219776 + 479270982436 = 855424^2 + 692294^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151377650273 + ... + 151377650280.

It is an arithmetic number, because the mean of its divisors is an integer number (353214517313).

Almost surely, 2^{1211021202212} is an apocalyptic number.

It is an amenable number.

1211021202212 is a deficient number, since it is larger than the sum of its proper divisors (908265901666).

1211021202212 is a wasteful number, since it uses less digits than its factorization.

1211021202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302755300557 (or 302755300555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211021202212 its reverse (2122021201121), we get a palindrome (3333042403333).

The spelling of 1211021202212 in words is "one trillion, two hundred eleven billion, twenty-one million, two hundred two thousand, two hundred twelve".