121045439997 has 12 divisors (see below), whose sum is σ = 175809401404. Its totient is φ = 80251119360.

The previous prime is 121045439953. The next prime is 121045440001. The reversal of 121045439997 is 799934540121.

121045439997 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 4 + 543 + 9 + 9 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2760346521 + 118285093476 = 52539^2 + 343926^2 .

It is not a de Polignac number, because 121045439997 - 2⁸ = 121045439741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121045439797) 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, 37151668 + ... + 37154925.

Almost surely, 2^121045439997 is an apocalyptic number.

It is an amenable number.

121045439997 is a deficient number, since it is larger than the sum of its proper divisors (54763961407).

121045439997 is a wasteful number, since it uses less digits than its factorization.

121045439997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74306780 (or 74306777 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 121045439997 in words is "one hundred twenty-one billion, forty-five million, four hundred thirty-nine thousand, nine hundred ninety-seven".