221000201011021 has 8 divisors (see below), whose sum is σ = 228247380281088. Its totient is φ = 213760405524000.

The previous prime is 221000201011013. The next prime is 221000201011091. The reversal of 221000201011021 is 120110102000122.

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 221000201011021 - 2³ = 221000201011013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221000201010992 and 221000201011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000201011001) 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, 1845884920 + ... + 1846004641.

It is an arithmetic number, because the mean of its divisors is an integer number (28530922535136).

Almost surely, 2^{221000201011021} is an apocalyptic number.

It is an amenable number.

221000201011021 is a deficient number, since it is larger than the sum of its proper divisors (7247179270067).

221000201011021 is a wasteful number, since it uses less digits than its factorization.

221000201011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691891523.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221000201011021 its reverse (120110102000122), we get a palindrome (341110303011143).

The spelling of 221000201011021 in words is "two hundred twenty-one trillion, two hundred one million, eleven thousand, twenty-one".