20001002201097 has 12 divisors (see below), whose sum is σ = 28328985817776. Its totient is φ = 12549648439360.

The previous prime is 20001002201083. The next prime is 20001002201123. The reversal of 20001002201097 is 79010220010002.

It is not a de Polignac number, because 20001002201097 - 2¹⁶ = 20001002135561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001002201797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11534602479 + ... + 11534604212.

It is an arithmetic number, because the mean of its divisors is an integer number (2360748818148).

Almost surely, 2^{20001002201097} is an apocalyptic number.

It is an amenable number.

20001002201097 is a deficient number, since it is larger than the sum of its proper divisors (8327983616679).

20001002201097 is a wasteful number, since it uses less digits than its factorization.

20001002201097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23069206728 (or 23069206711 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

Adding to 20001002201097 its reverse (79010220010002), we get a palindrome (99011222211099).

The spelling of 20001002201097 in words is "twenty trillion, one billion, two million, two hundred one thousand, ninety-seven".