2120201200121 has 2 divisors, whose sum is σ = 2120201200122. Its totient is φ = 2120201200120.

The previous prime is 2120201200097. The next prime is 2120201200129. The reversal of 2120201200121 is 1210021020212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398022464400 + 722178735721 = 1182380^2 + 849811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120201200121 - 2¹⁰ = 2120201199097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120201200096 and 2120201200105.

It is not a weakly prime, because it can be changed into another prime (2120201200129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060100600060 + 1060100600061.

It is an arithmetic number, because the mean of its divisors is an integer number (1060100600061).

Almost surely, 2^{2120201200121} is an apocalyptic number.

It is an amenable number.

2120201200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120201200121 is an equidigital number, since it uses as much as digits as its factorization.

2120201200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120201200121 its reverse (1210021020212), we get a palindrome (3330222220333).

It can be divided in two parts, 212020 and 1200121, that added together give a palindrome (1412141).

The spelling of 2120201200121 in words is "two trillion, one hundred twenty billion, two hundred one million, two hundred thousand, one hundred twenty-one".