20021202010097 has 4 divisors (see below), whose sum is σ = 20095080984576. Its totient is φ = 19947323035620.

The previous prime is 20021202010067. The next prime is 20021202010099. The reversal of 20021202010097 is 79001020212002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20021202010097 - 2⁸ = 20021202009841 is a prime.

It is a super-2 number, since 2×20021202010097² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021202010099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36939486833 + ... + 36939487374.

It is an arithmetic number, because the mean of its divisors is an integer number (5023770246144).

Almost surely, 2^{20021202010097} is an apocalyptic number.

It is an amenable number.

20021202010097 is a deficient number, since it is larger than the sum of its proper divisors (73878974479).

20021202010097 is an equidigital number, since it uses as much as digits as its factorization.

20021202010097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73878974478.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 20021202010097 its reverse (79001020212002), we get a palindrome (99022222222099).

The spelling of 20021202010097 in words is "twenty trillion, twenty-one billion, two hundred two million, ten thousand, ninety-seven".