220221221122021 has 8 divisors (see below), whose sum is σ = 254173290574464. Its totient is φ = 186892125421200.

The previous prime is 220221221122013. The next prime is 220221221122027. The reversal of 220221221122021 is 120221122122022.

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 220221221122021 - 2³ = 220221221122013 is a prime.

It is a super-2 number, since 2×220221221122021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220221221121983 and 220221221122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221221122027) 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, 155743437145 + ... + 155743438558.

It is an arithmetic number, because the mean of its divisors is an integer number (31771661321808).

Almost surely, 2^{220221221122021} is an apocalyptic number.

It is an amenable number.

220221221122021 is a deficient number, since it is larger than the sum of its proper divisors (33952069452443).

220221221122021 is a wasteful number, since it uses less digits than its factorization.

220221221122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311486875811.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 220221221122021 its reverse (120221122122022), we get a palindrome (340442343244043).

The spelling of 220221221122021 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".