1076551406221 has 2 divisors, whose sum is σ = 1076551406222. Its totient is φ = 1076551406220.

The previous prime is 1076551406197. The next prime is 1076551406233. The reversal of 1076551406221 is 1226041556701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900999624100 + 175551782121 = 949210^2 + 418989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076551406221 - 2¹⁵ = 1076551373453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1076551407221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538275703110 + 538275703111.

It is an arithmetic number, because the mean of its divisors is an integer number (538275703111).

Almost surely, 2^{1076551406221} is an apocalyptic number.

It is an amenable number.

1076551406221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1076551406221 is an equidigital number, since it uses as much as digits as its factorization.

1076551406221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 1076551406221 in words is "one trillion, seventy-six billion, five hundred fifty-one million, four hundred six thousand, two hundred twenty-one".