221000201121020 has 96 divisors (see below), whose sum is σ = 480731645882880. Its totient is φ = 85240271289600.

The previous prime is 221000201120929. The next prime is 221000201121083. The reversal of 221000201121020 is 20121102000122.

It is a junction number, because it is equal to n+sod(n) for n = 221000201120986 and 221000201121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1415219945 + ... + 1415376095.

It is an arithmetic number, because the mean of its divisors is an integer number (5007621311280).

Almost surely, 2^{221000201121020} is an apocalyptic number.

221000201121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000201121020 is an abundant number, since it is smaller than the sum of its proper divisors (259731444761860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221000201121020 is a wasteful number, since it uses less digits than its factorization.

221000201121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159363 (or 159361 counting only the distinct ones).

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

Adding to 221000201121020 its reverse (20121102000122), we get a palindrome (241121303121142).

The spelling of 221000201121020 in words is "two hundred twenty-one trillion, two hundred one million, one hundred twenty-one thousand, twenty".