4520212005121 has 2 divisors, whose sum is σ = 4520212005122. Its totient is φ = 4520212005120.

The previous prime is 4520212005107. The next prime is 4520212005131. The reversal of 4520212005121 is 1215002120254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2604302026225 + 1915909978896 = 1613785^2 + 1384164^2 .

It is a cyclic number.

It is not a de Polignac number, because 4520212005121 - 2²⁹ = 4519675134209 is a prime.

It is a super-2 number, since 2×4520212005121² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4520212005131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260106002560 + 2260106002561.

It is an arithmetic number, because the mean of its divisors is an integer number (2260106002561).

Almost surely, 2^{4520212005121} is an apocalyptic number.

It is an amenable number.

4520212005121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520212005121 is an equidigital number, since it uses as much as digits as its factorization.

4520212005121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 4520212005121 its reverse (1215002120254), we get a palindrome (5735214125375).

The spelling of 4520212005121 in words is "four trillion, five hundred twenty billion, two hundred twelve million, five thousand, one hundred twenty-one".