1121020100212 has 24 divisors (see below), whose sum is σ = 2111236512840. Its totient is φ = 518890690560.

The previous prime is 1121020100191. The next prime is 1121020100219. The reversal of 1121020100212 is 2120010201211.

It can be written as a sum of positive squares in 4 ways, for example, as 12813334416 + 1108206765796 = 113196^2 + 1052714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121020100192 and 1121020100201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121020100219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135123637 + ... + 135131932.

It is an arithmetic number, because the mean of its divisors is an integer number (87968188035).

Almost surely, 2^{1121020100212} is an apocalyptic number.

It is an amenable number.

1121020100212 is a deficient number, since it is larger than the sum of its proper divisors (990216412628).

1121020100212 is a wasteful number, since it uses less digits than its factorization.

1121020100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270255651 (or 270255649 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121020100212 its reverse (2120010201211), we get a palindrome (3241030301423).

The spelling of 1121020100212 in words is "one trillion, one hundred twenty-one billion, twenty million, one hundred thousand, two hundred twelve".