20211011122011 has 8 divisors (see below), whose sum is σ = 26948923175424. Its totient is φ = 13473553241640.

The previous prime is 20211011122007. The next prime is 20211011122031. The reversal of 20211011122011 is 11022111011202.

It is a happy number.

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

It is not a de Polignac number, because 20211011122011 - 2² = 20211011122007 is a prime.

It is a super-2 number, since 2×20211011122011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211011122031) 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, 113439411 + ... + 113617436.

It is an arithmetic number, because the mean of its divisors is an integer number (3368615396928).

Almost surely, 2^{20211011122011} is an apocalyptic number.

20211011122011 is a deficient number, since it is larger than the sum of its proper divisors (6737912053413).

20211011122011 is a wasteful number, since it uses less digits than its factorization.

20211011122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227086521.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20211011122011 its reverse (11022111011202), we get a palindrome (31233122133213).

The spelling of 20211011122011 in words is "twenty trillion, two hundred eleven billion, eleven million, one hundred twenty-two thousand, eleven".