1020122122021 has 2 divisors, whose sum is σ = 1020122122022. Its totient is φ = 1020122122020.

The previous prime is 1020122122003. The next prime is 1020122122039. The reversal of 1020122122021 is 1202212210201.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1020122122003) and next prime (1020122122039).

It can be written as a sum of positive squares in only one way, i.e., 565825901796 + 454296220225 = 752214^2 + 674015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020122122021 - 2⁵ = 1020122121989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020122121986 and 1020122122004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020122123021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510061061010 + 510061061011.

It is an arithmetic number, because the mean of its divisors is an integer number (510061061011).

Almost surely, 2^{1020122122021} is an apocalyptic number.

It is an amenable number.

1020122122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020122122021 is an equidigital number, since it uses as much as digits as its factorization.

1020122122021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1020122122021 its reverse (1202212210201), we get a palindrome (2222334332222).

The spelling of 1020122122021 in words is "one trillion, twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, twenty-one".