197056121 has 4 divisors (see below), whose sum is σ = 198607872. Its totient is φ = 195504372.

The previous prime is 197056109. The next prime is 197056141. The reversal of 197056121 is 121650791.

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 not a de Polignac number, because 197056121 - 2¹⁴ = 197039737 is a prime.

It is a super-2 number, since 2×197056121² = 77662229647133282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197056141) 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 3 ways as a sum of consecutive naturals, for example, 775685 + ... + 775938.

It is an arithmetic number, because the mean of its divisors is an integer number (49651968).

Almost surely, 2^197056121 is an apocalyptic number.

It is an amenable number.

197056121 is a deficient number, since it is larger than the sum of its proper divisors (1551751).

197056121 is a wasteful number, since it uses less digits than its factorization.

197056121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551750.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 197056121 is about 14037.6679331006. The cubic root of 197056121 is about 581.9200350294.

The spelling of 197056121 in words is "one hundred ninety-seven million, fifty-six thousand, one hundred twenty-one".