20102100210097 has 16 divisors (see below), whose sum is σ = 21157938892800. Its totient is φ = 19073463005520.

The previous prime is 20102100210079. The next prime is 20102100210107. The reversal of 20102100210097 is 79001200120102.

It is a cyclic number.

It is not a de Polignac number, because 20102100210097 - 2¹⁹ = 20102099685809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102100216097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13806493 + ... + 15192874.

It is an arithmetic number, because the mean of its divisors is an integer number (1322371180800).

Almost surely, 2^{20102100210097} is an apocalyptic number.

It is an amenable number.

20102100210097 is a deficient number, since it is larger than the sum of its proper divisors (1055838682703).

20102100210097 is a wasteful number, since it uses less digits than its factorization.

20102100210097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28999836.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 20102100210097 its reverse (79001200120102), we get a palindrome (99103300330199).

The spelling of 20102100210097 in words is "twenty trillion, one hundred two billion, one hundred million, two hundred ten thousand, ninety-seven".