20210101210097 has 4 divisors (see below), whose sum is σ = 20210221685616. Its totient is φ = 20209980734580.

The previous prime is 20210101210043. The next prime is 20210101210121. The reversal of 20210101210097 is 79001210101202.

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 20210101210097 - 2²² = 20210097015793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210101210297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59985779 + ... + 60321752.

It is an arithmetic number, because the mean of its divisors is an integer number (5052555421404).

Almost surely, 2^{20210101210097} is an apocalyptic number.

It is an amenable number.

20210101210097 is a deficient number, since it is larger than the sum of its proper divisors (120475519).

20210101210097 is a wasteful number, since it uses less digits than its factorization.

20210101210097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120475518.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 20210101210097 its reverse (79001210101202), we get a palindrome (99211311311299).

The spelling of 20210101210097 in words is "twenty trillion, two hundred ten billion, one hundred one million, two hundred ten thousand, ninety-seven".