20211011101 has 4 divisors (see below), whose sum is σ = 20222322912. Its totient is φ = 20199699292.

The previous prime is 20211011087. The next prime is 20211011123. The reversal of 20211011101 is 10111011202.

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 20211011101 - 2¹¹ = 20211009053 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 (20211011701) 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, 5653225 + ... + 5656798.

It is an arithmetic number, because the mean of its divisors is an integer number (5055580728).

Almost surely, 2^20211011101 is an apocalyptic number.

It is an amenable number.

20211011101 is a deficient number, since it is larger than the sum of its proper divisors (11311811).

20211011101 is a wasteful number, since it uses less digits than its factorization.

20211011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11311810.

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

Adding to 20211011101 its reverse (10111011202), we get a palindrome (30322022303).

It can be divided in two parts, 2021101 and 1101, that added together give a palindrome (2022202).

The spelling of 20211011101 in words is "twenty billion, two hundred eleven million, eleven thousand, one hundred one".