20212123100101 has 16 divisors (see below), whose sum is σ = 22101457817088. Its totient is φ = 18401166259200.

The previous prime is 20212123100087. The next prime is 20212123100107. The reversal of 20212123100101 is 10100132121202.

It is a cyclic number.

It is not a de Polignac number, because 20212123100101 - 2²⁷ = 20211988882373 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 (20212123100107) 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, 7543780 + ... + 9865741.

It is an arithmetic number, because the mean of its divisors is an integer number (1381341113568).

Almost surely, 2^{20212123100101} is an apocalyptic number.

It is an amenable number.

20212123100101 is a deficient number, since it is larger than the sum of its proper divisors (1889334716987).

20212123100101 is a wasteful number, since it uses less digits than its factorization.

20212123100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17411772.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20212123100101 its reverse (10100132121202), we get a palindrome (30312255221303).

The spelling of 20212123100101 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-three million, one hundred thousand, one hundred one".