221000211122021 has 8 divisors (see below), whose sum is σ = 221389707739200. Its totient is φ = 220610723093280.

The previous prime is 221000211121913. The next prime is 221000211122063. The reversal of 221000211122021 is 120221112000122.

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 221000211122021 - 2³⁸ = 220725333215077 is a prime.

It is a super-2 number, since 2×221000211122021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000211122321) 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, 50499185 + ... + 54700713.

It is an arithmetic number, because the mean of its divisors is an integer number (27673713467400).

Almost surely, 2^{221000211122021} is an apocalyptic number.

It is an amenable number.

221000211122021 is a deficient number, since it is larger than the sum of its proper divisors (389496617179).

221000211122021 is an equidigital number, since it uses as much as digits as its factorization.

221000211122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294219.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221000211122021 its reverse (120221112000122), we get a palindrome (341221323122143).

The spelling of 221000211122021 in words is "two hundred twenty-one trillion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".