20211020101101 has 16 divisors (see below), whose sum is σ = 26989843503744. Its totient is φ = 13453112508864.

The previous prime is 20211020101003. The next prime is 20211020101109. The reversal of 20211020101101 is 10110102011202.

It is a de Polignac number, because none of the positive numbers 2^k-20211020101101 is a prime.

It is a super-2 number, since 2×20211020101101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211020101109) 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, 9941235 + ... + 11800431.

It is an arithmetic number, because the mean of its divisors is an integer number (1686865218984).

Almost surely, 2^{20211020101101} is an apocalyptic number.

It is an amenable number.

20211020101101 is a deficient number, since it is larger than the sum of its proper divisors (6778823402643).

20211020101101 is a wasteful number, since it uses less digits than its factorization.

20211020101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864820.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20211020101101 its reverse (10110102011202), we get a palindrome (30321122112303).

The spelling of 20211020101101 in words is "twenty trillion, two hundred eleven billion, twenty million, one hundred one thousand, one hundred one".