121011331400 has 48 divisors (see below), whose sum is σ = 281385970800. Its totient is φ = 48398575680.

The previous prime is 121011331393. The next prime is 121011331411. The reversal of 121011331400 is 4133110121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1824011 + ... + 1889189.

It is an arithmetic number, because the mean of its divisors is an integer number (5862207725).

Almost surely, 2^121011331400 is an apocalyptic number.

121011331400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011331400 is an abundant number, since it is smaller than the sum of its proper divisors (160374639400).

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

121011331400 is a wasteful number, since it uses less digits than its factorization.

121011331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74478 (or 74469 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121011331400 its reverse (4133110121), we get a palindrome (125144441521).

The spelling of 121011331400 in words is "one hundred twenty-one billion, eleven million, three hundred thirty-one thousand, four hundred".