121005343400 has 48 divisors (see below), whose sum is σ = 284498559900. Its totient is φ = 47858286080.

The previous prime is 121005343387. The next prime is 121005343423. The reversal of 121005343400 is 4343500121.

It can be written as a sum of positive squares in 6 ways, for example, as 23127718084 + 97877625316 = 152078^2 + 312854^2 .

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, 3381227 + ... + 3416826.

Almost surely, 2^121005343400 is an apocalyptic number.

121005343400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121005343400 is an abundant number, since it is smaller than the sum of its proper divisors (163493216500).

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

121005343400 is a wasteful number, since it uses less digits than its factorization.

121005343400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798158 (or 6798149 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 121005343400 its reverse (4343500121), we get a palindrome (125348843521).

The spelling of 121005343400 in words is "one hundred twenty-one billion, five million, three hundred forty-three thousand, four hundred".