1051343554021 has 2 divisors, whose sum is σ = 1051343554022. Its totient is φ = 1051343554020.

The previous prime is 1051343553979. The next prime is 1051343554031. The reversal of 1051343554021 is 1204553431501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740264068996 + 311079485025 = 860386^2 + 557745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051343554021 - 2¹⁹ = 1051343029733 is a prime.

It is a super-2 number, since 2×1051343554021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051343554031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525671777010 + 525671777011.

It is an arithmetic number, because the mean of its divisors is an integer number (525671777011).

Almost surely, 2^{1051343554021} is an apocalyptic number.

It is an amenable number.

1051343554021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051343554021 is an equidigital number, since it uses as much as digits as its factorization.

1051343554021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 1051343554021 its reverse (1204553431501), we get a palindrome (2255896985522).

The spelling of 1051343554021 in words is "one trillion, fifty-one billion, three hundred forty-three million, five hundred fifty-four thousand, twenty-one".