121020111100197 has 12 divisors (see below), whose sum is σ = 174817984993600. Its totient is φ = 80674924290408.

The previous prime is 121020111100177. The next prime is 121020111100201. The reversal of 121020111100197 is 791001111020121.

It is not a de Polignac number, because 121020111100197 - 2⁷ = 121020111100069 is a prime.

It is a super-3 number, since 3×121020111100197³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121020111100197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020111100117) 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, 428999197 + ... + 429281202.

Almost surely, 2^{121020111100197} is an apocalyptic number.

It is an amenable number.

121020111100197 is a deficient number, since it is larger than the sum of its proper divisors (53797873893403).

121020111100197 is a wasteful number, since it uses less digits than its factorization.

121020111100197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858296072 (or 858296069 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 27.

The spelling of 121020111100197 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, one hundred thousand, one hundred ninety-seven".