20211111021101 has 48 divisors (see below), whose sum is σ = 27374778412800. Its totient is φ = 14520128705280.

The previous prime is 20211111021067. The next prime is 20211111021121. The reversal of 20211111021101 is 10112011111202.

It is not a de Polignac number, because 20211111021101 - 2⁶ = 20211111021037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211111021121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8144345 + ... + 10332113.

It is an arithmetic number, because the mean of its divisors is an integer number (570307883600).

Almost surely, 2^{20211111021101} is an apocalyptic number.

It is an amenable number.

20211111021101 is a deficient number, since it is larger than the sum of its proper divisors (7163667391699).

20211111021101 is a wasteful number, since it uses less digits than its factorization.

20211111021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188650 (or 2188639 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20211111021101 its reverse (10112011111202), we get a palindrome (30323122132303).

The spelling of 20211111021101 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, twenty-one thousand, one hundred one".