20211026011 has 16 divisors (see below), whose sum is σ = 24098439168. Its totient is φ = 16735017600.

The previous prime is 20211025993. The next prime is 20211026063. The reversal of 20211026011 is 11062011202.

It is not a de Polignac number, because 20211026011 - 2³¹ = 18063542363 is a prime.

It is a super-4 number, since 4×20211026011⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211026611) 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, 1737435 + ... + 1749028.

It is an arithmetic number, because the mean of its divisors is an integer number (1506152448).

Almost surely, 2^20211026011 is an apocalyptic number.

20211026011 is a deficient number, since it is larger than the sum of its proper divisors (3887413157).

20211026011 is a wasteful number, since it uses less digits than its factorization.

20211026011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486522.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20211026011 its reverse (11062011202), we get a palindrome (31273037213).

The spelling of 20211026011 in words is "twenty billion, two hundred eleven million, twenty-six thousand, eleven".