1020221121011 has 2 divisors, whose sum is σ = 1020221121012. Its totient is φ = 1020221121010.

The previous prime is 1020221120969. The next prime is 1020221121019. The reversal of 1020221121011 is 1101211220201.

It is a strong prime.

It is an emirp because it is prime and its reverse (1101211220201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020221121011 - 2¹⁰ = 1020221119987 is a prime.

It is a super-2 number, since 2×1020221121011² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020221121019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110560505 + 510110560506.

It is an arithmetic number, because the mean of its divisors is an integer number (510110560506).

Almost surely, 2^{1020221121011} is an apocalyptic number.

1020221121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020221121011 is an equidigital number, since it uses as much as digits as its factorization.

1020221121011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1020221121011 its reverse (1101211220201), we get a palindrome (2121432341212).

The spelling of 1020221121011 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".