102000290921 has 4 divisors (see below), whose sum is σ = 108000308052. Its totient is φ = 96000273792.

The previous prime is 102000290891. The next prime is 102000290933. The reversal of 102000290921 is 129092000201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69334789225 + 32665501696 = 263315^2 + 180736^2 .

It is a cyclic number.

It is not a de Polignac number, because 102000290921 - 2⁶ = 102000290857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102000290941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000008540 + ... + 3000008573.

It is an arithmetic number, because the mean of its divisors is an integer number (27000077013).

Almost surely, 2^102000290921 is an apocalyptic number.

It is an amenable number.

102000290921 is a deficient number, since it is larger than the sum of its proper divisors (6000017131).

102000290921 is an equidigital number, since it uses as much as digits as its factorization.

102000290921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000017130.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 102000290921 in words is "one hundred two billion, two hundred ninety thousand, nine hundred twenty-one".