1022021000197 has 2 divisors, whose sum is σ = 1022021000198. Its totient is φ = 1022021000196.

The previous prime is 1022021000123. The next prime is 1022021000207. The reversal of 1022021000197 is 7910001202201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958110126561 + 63910873636 = 978831^2 + 252806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022021000197 - 2¹¹ = 1022020998149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022021000797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010500098 + 511010500099.

It is an arithmetic number, because the mean of its divisors is an integer number (511010500099).

Almost surely, 2^{1022021000197} is an apocalyptic number.

It is an amenable number.

1022021000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022021000197 is an equidigital number, since it uses as much as digits as its factorization.

1022021000197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 1022021000197 its reverse (7910001202201), we get a palindrome (8932022202398).

The spelling of 1022021000197 in words is "one trillion, twenty-two billion, twenty-one million, one hundred ninety-seven", and thus it is an aban number.