1020221012011 has 4 divisors (see below), whose sum is σ = 1025399799072. Its totient is φ = 1015042224952.

The previous prime is 1020221012009. The next prime is 1020221012089. The reversal of 1020221012011 is 1102101220201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020221012011 - 2¹ = 1020221012009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020221011982 and 1020221012000.

It is not an unprimeable number, because it can be changed into a prime (1020221016011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589393235 + ... + 2589393628.

It is an arithmetic number, because the mean of its divisors is an integer number (256349949768).

Almost surely, 2^{1020221012011} is an apocalyptic number.

1020221012011 is a deficient number, since it is larger than the sum of its proper divisors (5178787061).

1020221012011 is an equidigital number, since it uses as much as digits as its factorization.

1020221012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178787060.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020221012011 its reverse (1102101220201), we get a palindrome (2122322232212).

The spelling of 1020221012011 in words is "one trillion, twenty billion, two hundred twenty-one million, twelve thousand, eleven".