103494992921 has 8 divisors (see below), whose sum is σ = 105236094600. Its totient is φ = 101766741120.

The previous prime is 103494992893. The next prime is 103494992981. The reversal of 103494992921 is 129299494301.

It can be written as a sum of positive squares in 4 ways, for example, as 21744746521 + 81750246400 = 147461^2 + 285920^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103494992921 is a prime.

It is a super-2 number, since 2×103494992921² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103494992981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3196226 + ... + 3228443.

It is an arithmetic number, because the mean of its divisors is an integer number (13154511825).

Almost surely, 2^103494992921 is an apocalyptic number.

It is an amenable number.

103494992921 is a deficient number, since it is larger than the sum of its proper divisors (1741101679).

103494992921 is an equidigital number, since it uses as much as digits as its factorization.

103494992921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424939.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 103494992921 in words is "one hundred three billion, four hundred ninety-four million, nine hundred ninety-two thousand, nine hundred twenty-one".