97821101 has 12 divisors (see below), whose sum is σ = 119782080. Its totient is φ = 79432920.

The previous prime is 97821091. The next prime is 97821103. The reversal of 97821101 is 10112879.

It is a de Polignac number, because none of the positive numbers 2^k-97821101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97821103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51605 + ... + 53466.

It is an arithmetic number, because the mean of its divisors is an integer number (9981840).

Almost surely, 2^97821101 is an apocalyptic number.

It is an amenable number.

97821101 is a deficient number, since it is larger than the sum of its proper divisors (21960979).

97821101 is a wasteful number, since it uses less digits than its factorization.

97821101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105104 (or 105097 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 97821101 is about 9890.4550451433. The cubic root of 97821101 is about 460.7629132725.

The spelling of 97821101 in words is "ninety-seven million, eight hundred twenty-one thousand, one hundred one".