121001607 has 14 divisors (see below), whose sum is σ = 181420512. Its totient is φ = 80667252.

The previous prime is 121001603. The next prime is 121001609. The reversal of 121001607 is 706100121.

It is not a de Polignac number, because 121001607 - 2² = 121001603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121001607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001603) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 82263 + ... + 83720.

It is an arithmetic number, because the mean of its divisors is an integer number (12958608).

Almost surely, 2^121001607 is an apocalyptic number.

121001607 is a deficient number, since it is larger than the sum of its proper divisors (60418905).

121001607 is an frugal number, since it uses more digits than its factorization.

121001607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166001 (or 165986 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 121001607 is about 11000.0730452120. The cubic root of 121001607 is about 494.6109339467.

Adding to 121001607 its reverse (706100121), we get a palindrome (827101728).

The spelling of 121001607 in words is "one hundred twenty-one million, one thousand, six hundred seven".