102100120321 has 2 divisors, whose sum is σ = 102100120322. Its totient is φ = 102100120320.

The previous prime is 102100120313. The next prime is 102100120379. The reversal of 102100120321 is 123021001201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73692703296 + 28407417025 = 271464^2 + 168545^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100120321 - 2³ = 102100120313 is a prime.

It is not a weakly prime, because it can be changed into another prime (102100120301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050060160 + 51050060161.

It is an arithmetic number, because the mean of its divisors is an integer number (51050060161).

Almost surely, 2^102100120321 is an apocalyptic number.

It is an amenable number.

102100120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100120321 is an equidigital number, since it uses as much as digits as its factorization.

102100120321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102100120321 its reverse (123021001201), we get a palindrome (225121121522).

The spelling of 102100120321 in words is "one hundred two billion, one hundred million, one hundred twenty thousand, three hundred twenty-one".