121000252707 has 64 divisors (see below), whose sum is σ = 192359488000. Its totient is φ = 74946985344.

The previous prime is 121000252697. The next prime is 121000252721. The reversal of 121000252707 is 707252000121.

It is not a de Polignac number, because 121000252707 - 2⁷ = 121000252579 is a prime.

It is a super-2 number, since 2×121000252707² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000252507) 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 63 ways as a sum of consecutive naturals, for example, 7863273 + ... + 7878645.

It is an arithmetic number, because the mean of its divisors is an integer number (3005617000).

Almost surely, 2^121000252707 is an apocalyptic number.

121000252707 is a deficient number, since it is larger than the sum of its proper divisors (71359235293).

121000252707 is a wasteful number, since it uses less digits than its factorization.

121000252707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15697 (or 15691 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

Adding to 121000252707 its reverse (707252000121), we get a palindrome (828252252828).

The spelling of 121000252707 in words is "one hundred twenty-one billion, two hundred fifty-two thousand, seven hundred seven".