1211100122212 has 6 divisors (see below), whose sum is σ = 2119425213878. Its totient is φ = 605550061104.

The previous prime is 1211100122189. The next prime is 1211100122227. The reversal of 1211100122212 is 2122210011121.

It can be written as a sum of positive squares in only one way, i.e., 868575536676 + 342524585536 = 931974^2 + 585256^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151387515273 + ... + 151387515280.

Almost surely, 2^{1211100122212} is an apocalyptic number.

It is an amenable number.

1211100122212 is a deficient number, since it is larger than the sum of its proper divisors (908325091666).

1211100122212 is a wasteful number, since it uses less digits than its factorization.

1211100122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302775030557 (or 302775030555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211100122212 its reverse (2122210011121), we get a palindrome (3333310133333).

The spelling of 1211100122212 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred twenty-two thousand, two hundred twelve".