20212500254501 has 2 divisors, whose sum is σ = 20212500254502. Its totient is φ = 20212500254500.

The previous prime is 20212500254491. The next prime is 20212500254579. The reversal of 20212500254501 is 10545200521202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19346353605601 + 866146648900 = 4398449^2 + 930670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212500254501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212500257501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106250127250 + 10106250127251.

It is an arithmetic number, because the mean of its divisors is an integer number (10106250127251).

Almost surely, 2^{20212500254501} is an apocalyptic number.

It is an amenable number.

20212500254501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212500254501 is an equidigital number, since it uses as much as digits as its factorization.

20212500254501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 20212500254501 its reverse (10545200521202), we get a palindrome (30757700775703).

The spelling of 20212500254501 in words is "twenty trillion, two hundred twelve billion, five hundred million, two hundred fifty-four thousand, five hundred one".