2620020555121 has 2 divisors, whose sum is σ = 2620020555122. Its totient is φ = 2620020555120.

The previous prime is 2620020555083. The next prime is 2620020555137. The reversal of 2620020555121 is 1215550200262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2566929482896 + 53091072225 = 1602164^2 + 230415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620020555121 - 2⁹ = 2620020554609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2620020555151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310010277560 + 1310010277561.

It is an arithmetic number, because the mean of its divisors is an integer number (1310010277561).

Almost surely, 2^{2620020555121} is an apocalyptic number.

It is an amenable number.

2620020555121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620020555121 is an equidigital number, since it uses as much as digits as its factorization.

2620020555121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 2620020555121 its reverse (1215550200262), we get a palindrome (3835570755383).

The spelling of 2620020555121 in words is "two trillion, six hundred twenty billion, twenty million, five hundred fifty-five thousand, one hundred twenty-one".