1021111101097 has 4 divisors (see below), whose sum is σ = 1021141612800. Its totient is φ = 1021080589396.

The previous prime is 1021111101061. The next prime is 1021111101107. The reversal of 1021111101097 is 7901011111201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021111101097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021111101007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15205597 + ... + 15272602.

It is an arithmetic number, because the mean of its divisors is an integer number (255285403200).

Almost surely, 2^{1021111101097} is an apocalyptic number.

It is an amenable number.

1021111101097 is a deficient number, since it is larger than the sum of its proper divisors (30511703).

1021111101097 is an equidigital number, since it uses as much as digits as its factorization.

1021111101097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30511702.

The product of its (nonzero) digits is 126, while the sum is 25.

Adding to 1021111101097 its reverse (7901011111201), we get a palindrome (8922122212298).

The spelling of 1021111101097 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred one thousand, ninety-seven".