121066156597 has 4 divisors (see below), whose sum is σ = 126329902560. Its totient is φ = 115802410636.

The previous prime is 121066156577. The next prime is 121066156613. The reversal of 121066156597 is 795651660121.

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 121066156597 - 2⁷ = 121066156469 is a prime.

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 121066156597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121066156507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631872947 + ... + 2631872992.

It is an arithmetic number, because the mean of its divisors is an integer number (31582475640).

Almost surely, 2^121066156597 is an apocalyptic number.

It is an amenable number.

121066156597 is a deficient number, since it is larger than the sum of its proper divisors (5263745963).

121066156597 is an equidigital number, since it uses as much as digits as its factorization.

121066156597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263745962.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 121066156597 in words is "one hundred twenty-one billion, sixty-six million, one hundred fifty-six thousand, five hundred ninety-seven".