120121121005 has 32 divisors (see below), whose sum is σ = 152965709568. Its totient is φ = 90360230400.

The previous prime is 120121120979. The next prime is 120121121011. The reversal of 120121121005 is 500121121021.

It is not a de Polignac number, because 120121121005 - 2¹⁵ = 120121088237 is a prime.

It is a super-2 number, since 2×120121121005² (a number of 23 digits) contains 22 as substring.

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 120121121005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15997462 + ... + 16004968.

It is an arithmetic number, because the mean of its divisors is an integer number (4780178424).

Almost surely, 2^120121121005 is an apocalyptic number.

It is an amenable number.

120121121005 is a deficient number, since it is larger than the sum of its proper divisors (32844588563).

120121121005 is a wasteful number, since it uses less digits than its factorization.

120121121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9877.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 120121121005 its sum of digits (16), we get a palindrome (120121121021).

Adding to 120121121005 its reverse (500121121021), we get a palindrome (620242242026).

The spelling of 120121121005 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, five".