2122120121236 has 12 divisors (see below), whose sum is σ = 3713803667028. Its totient is φ = 1061033359232.

The previous prime is 2122120121201. The next prime is 2122120121237. The reversal of 2122120121236 is 6321210212212.

It can be written as a sum of positive squares in 2 ways, for example, as 1193787871236 + 928332250000 = 1092606^2 + 963500^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2122120121236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122120121237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6495991 + ... + 6814846.

It is an arithmetic number, because the mean of its divisors is an integer number (309483638919).

Almost surely, 2^{2122120121236} is an apocalyptic number.

It is an amenable number.

2122120121236 is a deficient number, since it is larger than the sum of its proper divisors (1591683545792).

2122120121236 is a wasteful number, since it uses less digits than its factorization.

2122120121236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13350698 (or 13350696 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 2122120121236 its reverse (6321210212212), we get a palindrome (8443330333448).

The spelling of 2122120121236 in words is "two trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred thirty-six".