102001111321 has 4 divisors (see below), whose sum is σ = 106435942272. Its totient is φ = 97566280372.

The previous prime is 102001111313. The next prime is 102001111327. The reversal of 102001111321 is 123111100201.

It is a happy number.

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 102001111321 - 2³ = 102001111313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102001111327) 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, 2217415441 + ... + 2217415486.

It is an arithmetic number, because the mean of its divisors is an integer number (26608985568).

Almost surely, 2^102001111321 is an apocalyptic number.

It is an amenable number.

102001111321 is a deficient number, since it is larger than the sum of its proper divisors (4434830951).

102001111321 is an equidigital number, since it uses as much as digits as its factorization.

102001111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434830950.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 102001111321 its reverse (123111100201), we get a palindrome (225112211522).

The spelling of 102001111321 in words is "one hundred two billion, one million, one hundred eleven thousand, three hundred twenty-one".