10221221201000 has 32 divisors (see below), whose sum is σ = 23917657612680. Its totient is φ = 4088488480000.

The previous prime is 10221221200999. The next prime is 10221221201033. The reversal of 10221221201000 is 10212212201.

It can be written as a sum of positive squares in 4 ways, for example, as 1496771177476 + 8724450023524 = 1223426^2 + 2953718^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5110609601 + ... + 5110611600.

Almost surely, 2^{10221221201000} is an apocalyptic number.

10221221201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221221201000 is an abundant number, since it is smaller than the sum of its proper divisors (13696436411680).

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

10221221201000 is a wasteful number, since it uses less digits than its factorization.

10221221201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221221222 (or 10221221208 counting only the distinct ones).

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

Adding to 10221221201000 its reverse (10212212201), we get a palindrome (10231433413201).

The spelling of 10221221201000 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand".