2542453211021 has 2 divisors, whose sum is σ = 2542453211022. Its totient is φ = 2542453211020.

The previous prime is 2542453210931. The next prime is 2542453211047. The reversal of 2542453211021 is 1201123542452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2504587942921 + 37865268100 = 1582589^2 + 194590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542453211021 - 2¹⁴ = 2542453194637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542453210021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271226605510 + 1271226605511.

It is an arithmetic number, because the mean of its divisors is an integer number (1271226605511).

Almost surely, 2^{2542453211021} is an apocalyptic number.

It is an amenable number.

2542453211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542453211021 is an equidigital number, since it uses as much as digits as its factorization.

2542453211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 2542453211021 its reverse (1201123542452), we get a palindrome (3743576753473).

The spelling of 2542453211021 in words is "two trillion, five hundred forty-two billion, four hundred fifty-three million, two hundred eleven thousand, twenty-one".