20201122102101 has 4 divisors (see below), whose sum is σ = 26934829469472. Its totient is φ = 13467414734732.

The previous prime is 20201122102097. The next prime is 20201122102103. The reversal of 20201122102101 is 10120122110202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20201122102101 - 2² = 20201122102097 is a prime.

It is a super-2 number, since 2×20201122102101² (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 (20201122102103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3366853683681 + ... + 3366853683686.

It is an arithmetic number, because the mean of its divisors is an integer number (6733707367368).

Almost surely, 2^{20201122102101} is an apocalyptic number.

It is an amenable number.

20201122102101 is a deficient number, since it is larger than the sum of its proper divisors (6733707367371).

20201122102101 is an equidigital number, since it uses as much as digits as its factorization.

20201122102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733707367370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20201122102101 its reverse (10120122110202), we get a palindrome (30321244212303).

The spelling of 20201122102101 in words is "twenty trillion, two hundred one billion, one hundred twenty-two million, one hundred two thousand, one hundred one".