121021232648100 has 144 divisors (see below), whose sum is σ = 352212352966656. Its totient is φ = 32082904784000.

The previous prime is 121021232648087. The next prime is 121021232648153. The reversal of 121021232648100 is 1846232120121.

It is a super-2 number, since 2×121021232648100² (a number of 29 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 47 ways as a sum of consecutive naturals, for example, 89346097 + ... + 90690503.

It is an arithmetic number, because the mean of its divisors is an integer number (2445919117824).

Almost surely, 2^{121021232648100} is an apocalyptic number.

121021232648100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121021232648100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176106176483328).

121021232648100 is an abundant number, since it is smaller than the sum of its proper divisors (231191120318556).

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

121021232648100 is a wasteful number, since it uses less digits than its factorization.

121021232648100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346186 (or 1346179 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

Adding to 121021232648100 its reverse (1846232120121), we get a palindrome (122867464768221).

The spelling of 121021232648100 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred thirty-two million, six hundred forty-eight thousand, one hundred".