1061104921 has 4 divisors (see below), whose sum is σ = 1095334144. Its totient is φ = 1026875700.

The previous prime is 1061104909. The next prime is 1061104987. The reversal of 1061104921 is 1294011601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1294011601 = 21487 ⋅60223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061104921 is a prime.

It is a super-2 number, since 2×1061104921² = 2251887306740832482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061104621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17114565 + ... + 17114626.

It is an arithmetic number, because the mean of its divisors is an integer number (273833536).

Almost surely, 2^1061104921 is an apocalyptic number.

It is an amenable number.

1061104921 is a deficient number, since it is larger than the sum of its proper divisors (34229223).

1061104921 is an equidigital number, since it uses as much as digits as its factorization.

1061104921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34229222.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1061104921 is about 32574.6054619239. The cubic root of 1061104921 is about 1019.9669734917.

The spelling of 1061104921 in words is "one billion, sixty-one million, one hundred four thousand, nine hundred twenty-one".