121420210410 has 128 divisors (see below), whose sum is σ = 341254656000. Its totient is φ = 30636242496.

The previous prime is 121420210399. The next prime is 121420210441. The reversal of 121420210410 is 14012024121.

121420210410 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 0 + 210 + 410 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4207611 + ... + 4236369.

It is an arithmetic number, because the mean of its divisors is an integer number (2666052000).

Almost surely, 2^121420210410 is an apocalyptic number.

121420210410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121420210410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170627328000).

121420210410 is an abundant number, since it is smaller than the sum of its proper divisors (219834445590).

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

121420210410 is a wasteful number, since it uses less digits than its factorization.

121420210410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29617 (or 29611 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121420210410 its reverse (14012024121), we get a palindrome (135432234531).

The spelling of 121420210410 in words is "one hundred twenty-one billion, four hundred twenty million, two hundred ten thousand, four hundred ten".