1100660521 has 2 divisors, whose sum is σ = 1100660522. Its totient is φ = 1100660520.

The previous prime is 1100660479. The next prime is 1100660569. The reversal of 1100660521 is 1250660011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 572166400 + 528494121 = 23920^2 + 22989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100660521 - 2²¹ = 1098563369 is a prime.

It is a super-2 number, since 2×1100660521² = 2422907164975982882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100660492 and 1100660501.

It is not a weakly prime, because it can be changed into another prime (1100660581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550330260 + 550330261.

It is an arithmetic number, because the mean of its divisors is an integer number (550330261).

Almost surely, 2^1100660521 is an apocalyptic number.

It is an amenable number.

1100660521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100660521 is an equidigital number, since it uses as much as digits as its factorization.

1100660521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1100660521 is about 33176.2041379058. The cubic root of 1100660521 is about 1032.4866931120.

The spelling of 1100660521 in words is "one billion, one hundred million, six hundred sixty thousand, five hundred twenty-one".