1021020220097 has 8 divisors (see below), whose sum is σ = 1030154828040. Its totient is φ = 1011887349760.

The previous prime is 1021020220039. The next prime is 1021020220117. The reversal of 1021020220097 is 7900220201201.

1021020220097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20442136576 + 1000578083521 = 142976^2 + 1000289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021020220097 - 2³² = 1016725252801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021020210097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760697 + ... + 1618857.

It is an arithmetic number, because the mean of its divisors is an integer number (128769353505).

Almost surely, 2^{1021020220097} is an apocalyptic number.

It is an amenable number.

1021020220097 is a deficient number, since it is larger than the sum of its proper divisors (9134607943).

1021020220097 is a wasteful number, since it uses less digits than its factorization.

1021020220097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868803.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 1021020220097 its reverse (7900220201201), we get a palindrome (8921240421298).

The spelling of 1021020220097 in words is "one trillion, twenty-one billion, twenty million, two hundred twenty thousand, ninety-seven".