1120020001021 has 2 divisors, whose sum is σ = 1120020001022. Its totient is φ = 1120020001020.

The previous prime is 1120020001019. The next prime is 1120020001069. The reversal of 1120020001021 is 1201000200211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089130180996 + 30889820025 = 1043614^2 + 175755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120020001021 - 2¹ = 1120020001019 is a prime.

Together with 1120020001019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1120020000989 and 1120020001007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120020001921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560010000510 + 560010000511.

It is an arithmetic number, because the mean of its divisors is an integer number (560010000511).

Almost surely, 2^{1120020001021} is an apocalyptic number.

It is an amenable number.

1120020001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120020001021 is an equidigital number, since it uses as much as digits as its factorization.

1120020001021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1120020001021 its reverse (1201000200211), we get a palindrome (2321020201232).

The spelling of 1120020001021 in words is "one trillion, one hundred twenty billion, twenty million, one thousand, twenty-one".