102010020201 has 24 divisors (see below), whose sum is σ = 153403232840. Its totient is φ = 65262226176.

The previous prime is 102010020197. The next prime is 102010020209. The reversal of 102010020201 is 102020010201.

It can be written as a sum of positive squares in 4 ways, for example, as 7047434601 + 94962585600 = 83949^2 + 308160^2 .

It is not a de Polignac number, because 102010020201 - 2² = 102010020197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (102010020209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2073886 + ... + 2122503.

Almost surely, 2^102010020201 is an apocalyptic number.

It is an amenable number.

102010020201 is a deficient number, since it is larger than the sum of its proper divisors (51393212639).

102010020201 is a wasteful number, since it uses less digits than its factorization.

102010020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196505 (or 4196502 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102010020201 its reverse (102020010201), we get a palindrome (204030030402).

The spelling of 102010020201 in words is "one hundred two billion, ten million, twenty thousand, two hundred one".