101021201997 has 16 divisors (see below), whose sum is σ = 138171156288. Its totient is φ = 65617171200.

The previous prime is 101021201989. The next prime is 101021202013. The reversal of 101021201997 is 799102120101.

It is not a de Polignac number, because 101021201997 - 2³ = 101021201989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021201947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924718 + ... + 1028175.

It is an arithmetic number, because the mean of its divisors is an integer number (8635697268).

Almost surely, 2^101021201997 is an apocalyptic number.

It is an amenable number.

101021201997 is a deficient number, since it is larger than the sum of its proper divisors (37149954291).

101021201997 is a wasteful number, since it uses less digits than its factorization.

101021201997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953340.

The product of its (nonzero) digits is 2268, while the sum is 33.

The spelling of 101021201997 in words is "one hundred one billion, twenty-one million, two hundred one thousand, nine hundred ninety-seven".