220201011000221 has 4 divisors (see below), whose sum is σ = 220572344914812. Its totient is φ = 219829677085632.

The previous prime is 220201011000203. The next prime is 220201011000239. The reversal of 220201011000221 is 122000110102022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (220201011000203) and next prime (220201011000239).

It can be written as a sum of positive squares in 2 ways, for example, as 182239578148996 + 37961432851225 = 13499614^2 + 6161285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201011000221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220201011000196 and 220201011000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201011000821) 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, 185666956406 + ... + 185666957591.

It is an arithmetic number, because the mean of its divisors is an integer number (55143086228703).

Almost surely, 2^{220201011000221} is an apocalyptic number.

It is an amenable number.

220201011000221 is a deficient number, since it is larger than the sum of its proper divisors (371333914591).

220201011000221 is an equidigital number, since it uses as much as digits as its factorization.

220201011000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371333914590.

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

Adding to 220201011000221 its reverse (122000110102022), we get a palindrome (342201121102243).

The spelling of 220201011000221 in words is "two hundred twenty trillion, two hundred one billion, eleven million, two hundred twenty-one", and thus it is an aban number.