20101002201 has 20 divisors (see below), whose sum is σ = 34317055872. Its totient is φ = 11486286648.

The previous prime is 20101002169. The next prime is 20101002209. The reversal of 20101002201 is 10220010102.

It is not a de Polignac number, because 20101002201 - 2⁵ = 20101002169 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 (20101002209) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17725185 + ... + 17726318.

Almost surely, 2^20101002201 is an apocalyptic number.

20101002201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20101002201 is a deficient number, since it is larger than the sum of its proper divisors (14216053671).

20101002201 is an equidigital number, since it uses as much as digits as its factorization.

20101002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35451522 (or 35451513 counting only the distinct ones).

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

Adding to 20101002201 its reverse (10220010102), we get a palindrome (30321012303).

The spelling of 20101002201 in words is "twenty billion, one hundred one million, two thousand, two hundred one".