220111020021 has 8 divisors (see below), whose sum is σ = 293494511520. Its totient is φ = 146734104272.

The previous prime is 220111020007. The next prime is 220111020043. The reversal of 220111020021 is 120020111022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220111020021 - 2⁶ = 220111019957 is a prime.

It is a super-2 number, since 2×220111020021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220111019979 and 220111020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565295 + ... + 1700108.

It is an arithmetic number, because the mean of its divisors is an integer number (36686813940).

Almost surely, 2^220111020021 is an apocalyptic number.

It is an amenable number.

220111020021 is a deficient number, since it is larger than the sum of its proper divisors (73383491499).

220111020021 is a wasteful number, since it uses less digits than its factorization.

220111020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287875.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 220111020021 its reverse (120020111022), we get a palindrome (340131131043).

The spelling of 220111020021 in words is "two hundred twenty billion, one hundred eleven million, twenty thousand, twenty-one".