20000121011101 has 16 divisors (see below), whose sum is σ = 24935315649408. Its totient is φ = 15584447476800.

The previous prime is 20000121011093. The next prime is 20000121011131. The reversal of 20000121011101 is 10111012100002.

It is a cyclic number.

It is not a de Polignac number, because 20000121011101 - 2³ = 20000121011093 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 (20000121011131) 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, 31773691 + ... + 32397031.

It is an arithmetic number, because the mean of its divisors is an integer number (1558457228088).

Almost surely, 2^{20000121011101} is an apocalyptic number.

It is an amenable number.

20000121011101 is a deficient number, since it is larger than the sum of its proper divisors (4935194638307).

20000121011101 is a wasteful number, since it uses less digits than its factorization.

20000121011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040052.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20000121011101 its reverse (10111012100002), we get a palindrome (30111133111103).

The spelling of 20000121011101 in words is "twenty trillion, one hundred twenty-one million, eleven thousand, one hundred one".