1111021001997 has 16 divisors (see below), whose sum is σ = 1482104534400. Its totient is φ = 740309169600.

The previous prime is 1111021001983. The next prime is 1111021002031. The reversal of 1111021001997 is 7991001201111.

It is not a de Polignac number, because 1111021001997 - 2¹⁸ = 1111020739853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111021001947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82911504 + ... + 82924902.

It is an arithmetic number, because the mean of its divisors is an integer number (92631533400).

Almost surely, 2^{1111021001997} is an apocalyptic number.

It is an amenable number.

1111021001997 is a deficient number, since it is larger than the sum of its proper divisors (371083532403).

1111021001997 is a wasteful number, since it uses less digits than its factorization.

1111021001997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25204.

The product of its (nonzero) digits is 1134, while the sum is 33.

The spelling of 1111021001997 in words is "one trillion, one hundred eleven billion, twenty-one million, one thousand, nine hundred ninety-seven".