102051242321 has 4 divisors (see below), whose sum is σ = 116629991232. Its totient is φ = 87472493412.

The previous prime is 102051242317. The next prime is 102051242333. The reversal of 102051242321 is 123242150201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102051242321 - 2² = 102051242317 is a prime.

It is a super-2 number, since 2×102051242321² (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 (102051242221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289374445 + ... + 7289374458.

It is an arithmetic number, because the mean of its divisors is an integer number (29157497808).

Almost surely, 2^102051242321 is an apocalyptic number.

It is an amenable number.

102051242321 is a deficient number, since it is larger than the sum of its proper divisors (14578748911).

102051242321 is an equidigital number, since it uses as much as digits as its factorization.

102051242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578748910.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 102051242321 its reverse (123242150201), we get a palindrome (225293392522).

The spelling of 102051242321 in words is "one hundred two billion, fifty-one million, two hundred forty-two thousand, three hundred twenty-one".