20212011101 has 4 divisors (see below), whose sum is σ = 20212747104. Its totient is φ = 20211275100.

The previous prime is 20212011041. The next prime is 20212011137. The reversal of 20212011101 is 10111021202.

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 20212011101 - 2⁶ = 20212011037 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 (20212011301) 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, 325145 + ... + 382286.

It is an arithmetic number, because the mean of its divisors is an integer number (5053186776).

Almost surely, 2^20212011101 is an apocalyptic number.

It is an amenable number.

20212011101 is a deficient number, since it is larger than the sum of its proper divisors (736003).

20212011101 is an equidigital number, since it uses as much as digits as its factorization.

20212011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736002.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20212011101 its reverse (10111021202), we get a palindrome (30323032303).

The spelling of 20212011101 in words is "twenty billion, two hundred twelve million, eleven thousand, one hundred one".