220021210101 has 16 divisors (see below), whose sum is σ = 365749544448. Its totient is φ = 114296732400.

The previous prime is 220021210051. The next prime is 220021210177. The reversal of 220021210101 is 101012120022.

It is not a de Polignac number, because 220021210101 - 2⁹ = 220021209589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021210301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476236155 + ... + 476236616.

It is an arithmetic number, because the mean of its divisors is an integer number (22859346528).

Almost surely, 2^220021210101 is an apocalyptic number.

220021210101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220021210101 is a deficient number, since it is larger than the sum of its proper divisors (145728334347).

220021210101 is a wasteful number, since it uses less digits than its factorization.

220021210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952472792.

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

Adding to 220021210101 its reverse (101012120022), we get a palindrome (321033330123).

The spelling of 220021210101 in words is "two hundred twenty billion, twenty-one million, two hundred ten thousand, one hundred one".