1020221001011 has 8 divisors (see below), whose sum is σ = 1022625550080. Its totient is φ = 1017817721928.

The previous prime is 1020221000989. The next prime is 1020221001017. The reversal of 1020221001011 is 1101001220201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020221001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020221000983 and 1020221001001.

It is not an unprimeable number, because it can be changed into a prime (1020221001017) 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, 1300760 + ... + 1931946.

It is an arithmetic number, because the mean of its divisors is an integer number (127828193760).

Almost surely, 2^{1020221001011} is an apocalyptic number.

1020221001011 is a deficient number, since it is larger than the sum of its proper divisors (2404549069).

1020221001011 is an equidigital number, since it uses as much as digits as its factorization.

1020221001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634993.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020221001011 its reverse (1101001220201), we get a palindrome (2121222221212).

The spelling of 1020221001011 in words is "one trillion, twenty billion, two hundred twenty-one million, one thousand, eleven".