1121202202212 has 36 divisors (see below), whose sum is σ = 2834208782860. Its totient is φ = 373726317312.

The previous prime is 1121202202201. The next prime is 1121202202261. The reversal of 1121202202212 is 2122022021211.

It is a happy number.

1121202202212 is a `hidden beast` number, since 11 + 212 + 0 + 220 + 221 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 517743567936 + 603458634276 = 719544^2 + 776826^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 11 ways as a sum of consecutive naturals, for example, 1592928 + ... + 2186280.

Almost surely, 2^{1121202202212} is an apocalyptic number.

1121202202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121202202212 is an abundant number, since it is smaller than the sum of its proper divisors (1713006580648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121202202212 is a wasteful number, since it uses less digits than its factorization.

1121202202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645852 (or 645847 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1121202202212 its reverse (2122022021211), we get a palindrome (3243224223423).

The spelling of 1121202202212 in words is "one trillion, one hundred twenty-one billion, two hundred two million, two hundred two thousand, two hundred twelve".