102002011121201 has 4 divisors (see below), whose sum is σ = 103674175238004. Its totient is φ = 100329847004400.

The previous prime is 102002011121191. The next prime is 102002011121287. The reversal of 102002011121201 is 102121110200201.

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 45479040754225 + 56522970366976 = 6743815^2 + 7518176^2 .

It is a cyclic number.

It is not a de Polignac number, because 102002011121201 - 2⁶ = 102002011121137 is a prime.

It is a super-2 number, since 2×102002011121201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102002011121401) 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, 836082058310 + ... + 836082058431.

It is an arithmetic number, because the mean of its divisors is an integer number (25918543809501).

Almost surely, 2^{102002011121201} is an apocalyptic number.

It is an amenable number.

102002011121201 is a deficient number, since it is larger than the sum of its proper divisors (1672164116803).

102002011121201 is an equidigital number, since it uses as much as digits as its factorization.

102002011121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672164116802.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102002011121201 its reverse (102121110200201), we get a palindrome (204123121321402).

The spelling of 102002011121201 in words is "one hundred two trillion, two billion, eleven million, one hundred twenty-one thousand, two hundred one".