220100220101021 has 32 divisors (see below), whose sum is σ = 238397866025088. Its totient is φ = 202000734351360.

The previous prime is 220100220101017. The next prime is 220100220101053. The reversal of 220100220101021 is 120101022001022.

It is not a de Polignac number, because 220100220101021 - 2² = 220100220101017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220100220100987 and 220100220101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220100220101221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8153960501 + ... + 8153987493.

It is an arithmetic number, because the mean of its divisors is an integer number (7449933313284).

Almost surely, 2^{220100220101021} is an apocalyptic number.

It is an amenable number.

220100220101021 is a deficient number, since it is larger than the sum of its proper divisors (18297645924067).

220100220101021 is a wasteful number, since it uses less digits than its factorization.

220100220101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31341.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220100220101021 its reverse (120101022001022), we get a palindrome (340201242102043).

The spelling of 220100220101021 in words is "two hundred twenty trillion, one hundred billion, two hundred twenty million, one hundred one thousand, twenty-one".