20213100111 has 8 divisors (see below), whose sum is σ = 27679200304. Its totient is φ = 13111200000.

The previous prime is 20213100071. The next prime is 20213100161. The reversal of 20213100111 is 11100131202.

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

It is not a de Polignac number, because 20213100111 - 2¹¹ = 20213098063 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 (20213100161) 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, 91049890 + ... + 91050111.

It is an arithmetic number, because the mean of its divisors is an integer number (3459900038).

Almost surely, 2^20213100111 is an apocalyptic number.

20213100111 is a deficient number, since it is larger than the sum of its proper divisors (7466100193).

20213100111 is a wasteful number, since it uses less digits than its factorization.

20213100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182100041.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20213100111 its reverse (11100131202), we get a palindrome (31313231313).

The spelling of 20213100111 in words is "twenty billion, two hundred thirteen million, one hundred thousand, one hundred eleven".