102020201001225 has 36 divisors (see below), whose sum is σ = 196785632159116. Its totient is φ = 50225329722240.

The previous prime is 102020201001223. The next prime is 102020201001239. The reversal of 102020201001225 is 522100102020201.

It can be written as a sum of positive squares in 6 ways, for example, as 42534644815881 + 59485556185344 = 6521859^2 + 7712688^2 .

It is not a de Polignac number, because 102020201001225 - 2¹ = 102020201001223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020201001198 and 102020201001207.

It is not an unprimeable number, because it can be changed into a prime (102020201001223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17439347674 + ... + 17439353523.

Almost surely, 2^{102020201001225} is an apocalyptic number.

102020201001225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102020201001225 is a deficient number, since it is larger than the sum of its proper divisors (94765431157891).

102020201001225 is a wasteful number, since it uses less digits than its factorization.

102020201001225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34878701226 (or 34878701218 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 102020201001225 its reverse (522100102020201), we get a palindrome (624120303021426).

The spelling of 102020201001225 in words is "one hundred two trillion, twenty billion, two hundred one million, one thousand, two hundred twenty-five".