121000212121010 has 96 divisors (see below), whose sum is σ = 241439144297472. Its totient is φ = 43569935805440.

The previous prime is 121000212121003. The next prime is 121000212121049. The reversal of 121000212121010 is 10121212000121.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1450400159 + ... + 1450483581.

It is an arithmetic number, because the mean of its divisors is an integer number (2514991086432).

Almost surely, 2^{121000212121010} is an apocalyptic number.

121000212121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000212121010 is a deficient number, since it is larger than the sum of its proper divisors (120438932176462).

121000212121010 is a wasteful number, since it uses less digits than its factorization.

121000212121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105308 (or 105291 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121000212121010 its reverse (10121212000121), we get a palindrome (131121424121131).

The spelling of 121000212121010 in words is "one hundred twenty-one trillion, two hundred twelve million, one hundred twenty-one thousand, ten".