20002220101 has 4 divisors (see below), whose sum is σ = 20002506304. Its totient is φ = 20001933900.

The previous prime is 20002220081. The next prime is 20002220123. The reversal of 20002220101 is 10102220002.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20002220101 - 2²³ = 19993831493 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 (20002220171) 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, 38836 + ... + 203746.

It is an arithmetic number, because the mean of its divisors is an integer number (5000626576).

Almost surely, 2^20002220101 is an apocalyptic number.

It is an amenable number.

20002220101 is a deficient number, since it is larger than the sum of its proper divisors (286203).

20002220101 is a wasteful number, since it uses less digits than its factorization.

20002220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286202.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20002220101 its reverse (10102220002), we get a palindrome (30104440103).

Subtracting from 20002220101 its reverse (10102220002), we obtain a palindrome (9900000099).

The spelling of 20002220101 in words is "twenty billion, two million, two hundred twenty thousand, one hundred one".