1123210013122 has 4 divisors (see below), whose sum is σ = 1684815019686. Its totient is φ = 561605006560.

The previous prime is 1123210013113. The next prime is 1123210013137. The reversal of 1123210013122 is 2213100123211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1121881337721 + 1328675401 = 1059189^2 + 36451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1123210013122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280802503279 + ... + 280802503282.

Almost surely, 2^{1123210013122} is an apocalyptic number.

1123210013122 is a deficient number, since it is larger than the sum of its proper divisors (561605006564).

1123210013122 is an equidigital number, since it uses as much as digits as its factorization.

1123210013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561605006563.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1123210013122 its reverse (2213100123211), we get a palindrome (3336310136333).

The spelling of 1123210013122 in words is "one trillion, one hundred twenty-three billion, two hundred ten million, thirteen thousand, one hundred twenty-two".