220111020101 has 4 divisors (see below), whose sum is σ = 251555451552. Its totient is φ = 188666588652.

The previous prime is 220111020067. The next prime is 220111020109. The reversal of 220111020101 is 101020111022.

220111020101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-220111020101 is a prime.

It is a super-2 number, since 2×220111020101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15722215715 + ... + 15722215728.

It is an arithmetic number, because the mean of its divisors is an integer number (62888862888).

Almost surely, 2^220111020101 is an apocalyptic number.

It is an amenable number.

220111020101 is a deficient number, since it is larger than the sum of its proper divisors (31444431451).

220111020101 is an equidigital number, since it uses as much as digits as its factorization.

220111020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31444431450.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 220111020101 its reverse (101020111022), we get a palindrome (321131131123).

The spelling of 220111020101 in words is "two hundred twenty billion, one hundred eleven million, twenty thousand, one hundred one".