20300505211 has 16 divisors (see below), whose sum is σ = 23947417600. Its totient is φ = 16845032160.

The previous prime is 20300505161. The next prime is 20300505233. The reversal of 20300505211 is 11250500302.

It is a cyclic number.

It is not a de Polignac number, because 20300505211 - 2⁷ = 20300505083 is a prime.

It is a super-2 number, since 2×20300505211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20300505241) 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, 145395 + ... + 248476.

It is an arithmetic number, because the mean of its divisors is an integer number (1496713600).

Almost surely, 2^20300505211 is an apocalyptic number.

20300505211 is a deficient number, since it is larger than the sum of its proper divisors (3646912389).

20300505211 is a wasteful number, since it uses less digits than its factorization.

20300505211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394114.

The product of its (nonzero) digits is 300, while the sum is 19.

The spelling of 20300505211 in words is "twenty billion, three hundred million, five hundred five thousand, two hundred eleven".