20011121106 has 8 divisors (see below), whose sum is σ = 40022242224. Its totient is φ = 6670373700.

The previous prime is 20011121101. The next prime is 20011121113. The reversal of 20011121106 is 60112111002.

It is a happy number.

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

20011121106 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20011121101) 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, 1667593420 + ... + 1667593431.

It is an arithmetic number, because the mean of its divisors is an integer number (5002780278).

Almost surely, 2^20011121106 is an apocalyptic number.

20011121106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011121106 is a wasteful number, since it uses less digits than its factorization.

20011121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335186856.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20011121106 its reverse (60112111002), we get a palindrome (80123232108).

The spelling of 20011121106 in words is "twenty billion, eleven million, one hundred twenty-one thousand, one hundred six".