121121011002 has 16 divisors (see below), whose sum is σ = 244385758080. Its totient is φ = 40016380992.

The previous prime is 121121010979. The next prime is 121121011013. The reversal of 121121011002 is 200110121121.

It is a super-2 number, since 2×121121011002² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89321602 + ... + 89322957.

It is an arithmetic number, because the mean of its divisors is an integer number (15274109880).

Almost surely, 2^121121011002 is an apocalyptic number.

121121011002 is an abundant number, since it is smaller than the sum of its proper divisors (123264747078).

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

121121011002 is a wasteful number, since it uses less digits than its factorization.

121121011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178644677.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121121011002 its reverse (200110121121), we get a palindrome (321231132123).

The spelling of 121121011002 in words is "one hundred twenty-one billion, one hundred twenty-one million, eleven thousand, two".