20101002197 has 8 divisors (see below), whose sum is σ = 20441885760. Its totient is φ = 19761723520.

The previous prime is 20101002169. The next prime is 20101002209. The reversal of 20101002197 is 79120010102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20101002197 - 2⁶ = 20101002133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101002107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375947 + ... + 426072.

It is an arithmetic number, because the mean of its divisors is an integer number (2555235720).

Almost surely, 2^20101002197 is an apocalyptic number.

It is an amenable number.

20101002197 is a deficient number, since it is larger than the sum of its proper divisors (340883563).

20101002197 is an equidigital number, since it uses as much as digits as its factorization.

20101002197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802443.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 20101002197 its reverse (79120010102), we get a palindrome (99221012299).

The spelling of 20101002197 in words is "twenty billion, one hundred one million, two thousand, one hundred ninety-seven".