121005202000 has 80 divisors (see below), whose sum is σ = 296116172352. Its totient is φ = 47818857600.

The previous prime is 121005201929. The next prime is 121005202027. The reversal of 121005202000 is 202500121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×121005202000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 198474 + ... + 530473.

Almost surely, 2^121005202000 is an apocalyptic number.

121005202000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121005202000 is an abundant number, since it is smaller than the sum of its proper divisors (175110970352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121005202000 is an equidigital number, since it uses as much as digits as its factorization.

121005202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729053 (or 729037 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 121005202000 its reverse (202500121), we get a palindrome (121207702121).

The spelling of 121005202000 in words is "one hundred twenty-one billion, five million, two hundred two thousand".