1024001023221 has 160 divisors (see below), whose sum is σ = 1716819616512. Its totient is φ = 603049328640.

The previous prime is 1024001023217. The next prime is 1024001023229. The reversal of 1024001023221 is 1223201004201.

It is a happy number.

1024001023221 is a `hidden beast` number, since 1 + 0 + 2 + 400 + 10 + 232 + 21 = 666.

It is not a de Polignac number, because 1024001023221 - 2² = 1024001023217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1024001023194 and 1024001023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024001023229) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2364898221 + ... + 2364898653.

Almost surely, 2^{1024001023221} is an apocalyptic number.

1024001023221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1024001023221 is a deficient number, since it is larger than the sum of its proper divisors (692818593291).

1024001023221 is a wasteful number, since it uses less digits than its factorization.

1024001023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1024001023221 its reverse (1223201004201), we get a palindrome (2247202027422).

The spelling of 1024001023221 in words is "one trillion, twenty-four billion, one million, twenty-three thousand, two hundred twenty-one".