20331011222101 has 4 divisors (see below), whose sum is σ = 20528399680672. Its totient is φ = 20133622763532.

The previous prime is 20331011222099. The next prime is 20331011222117. The reversal of 20331011222101 is 10122211013302.

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 20331011222101 - 2¹ = 20331011222099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331011222141) 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, 98694229131 + ... + 98694229336.

It is an arithmetic number, because the mean of its divisors is an integer number (5132099920168).

Almost surely, 2^{20331011222101} is an apocalyptic number.

It is an amenable number.

20331011222101 is a deficient number, since it is larger than the sum of its proper divisors (197388458571).

20331011222101 is a wasteful number, since it uses less digits than its factorization.

20331011222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197388458570.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20331011222101 its reverse (10122211013302), we get a palindrome (30453222235403).

The spelling of 20331011222101 in words is "twenty trillion, three hundred thirty-one billion, eleven million, two hundred twenty-two thousand, one hundred one".