121217067045 has 48 divisors (see below), whose sum is σ = 212420797680. Its totient is φ = 63938875392.

The previous prime is 121217067031. The next prime is 121217067151. The reversal of 121217067045 is 540760712121.

It can be written as a sum of positive squares in 8 ways, for example, as 4257171009 + 116959896036 = 65247^2 + 341994^2 .

It is not a de Polignac number, because 121217067045 - 2¹² = 121217062949 is a prime.

It is a super-3 number, since 3×121217067045³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6962211 + ... + 6979599.

It is an arithmetic number, because the mean of its divisors is an integer number (4425433285).

Almost surely, 2^121217067045 is an apocalyptic number.

121217067045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121217067045 is a deficient number, since it is larger than the sum of its proper divisors (91203730635).

121217067045 is a wasteful number, since it uses less digits than its factorization.

121217067045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19094 (or 19091 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

Adding to 121217067045 its reverse (540760712121), we get a palindrome (661977779166).

The spelling of 121217067045 in words is "one hundred twenty-one billion, two hundred seventeen million, sixty-seven thousand, forty-five".