20002121111101 has 8 divisors (see below), whose sum is σ = 20007070965504. Its totient is φ = 19997171731680.

The previous prime is 20002121111023. The next prime is 20002121111107. The reversal of 20002121111101 is 10111112120002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20002121111101 - 2²⁹ = 20001584240189 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 (20002121111107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92972866 + ... + 93187756.

It is an arithmetic number, because the mean of its divisors is an integer number (2500883870688).

Almost surely, 2^{20002121111101} is an apocalyptic number.

It is an amenable number.

20002121111101 is a deficient number, since it is larger than the sum of its proper divisors (4949854403).

20002121111101 is a wasteful number, since it uses less digits than its factorization.

20002121111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237491.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20002121111101 its reverse (10111112120002), we get a palindrome (30113233231103).

The spelling of 20002121111101 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred one".