1001011010221 has 8 divisors (see below), whose sum is σ = 1017458057088. Its totient is φ = 984565158000.

The previous prime is 1001011010177. The next prime is 1001011010287. The reversal of 1001011010221 is 1220101101001.

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 1001011010221 - 2¹⁷ = 1001010879149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001011010198 and 1001011010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001011010291) 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, 1476936 + ... + 2045326.

It is an arithmetic number, because the mean of its divisors is an integer number (127182257136).

Almost surely, 2^{1001011010221} is an apocalyptic number.

It is an amenable number.

1001011010221 is a deficient number, since it is larger than the sum of its proper divisors (16447046867).

1001011010221 is an equidigital number, since it uses as much as digits as its factorization.

1001011010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597323.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001011010221 its reverse (1220101101001), we get a palindrome (2221112111222).

The spelling of 1001011010221 in words is "one trillion, one billion, eleven million, ten thousand, two hundred twenty-one".