121400421310 has 32 divisors (see below), whose sum is σ = 253159088832. Its totient is φ = 41052821760.

The previous prime is 121400421299. The next prime is 121400421361. The reversal of 121400421310 is 13124004121.

It is a super-2 number, since 2×121400421310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11873601 + ... + 11883820.

It is an arithmetic number, because the mean of its divisors is an integer number (7911221526).

Almost surely, 2^121400421310 is an apocalyptic number.

121400421310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121400421310 is an abundant number, since it is smaller than the sum of its proper divisors (131758667522).

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

121400421310 is a wasteful number, since it uses less digits than its factorization.

121400421310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23757508.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121400421310 its reverse (13124004121), we get a palindrome (134524425431).

The spelling of 121400421310 in words is "one hundred twenty-one billion, four hundred million, four hundred twenty-one thousand, three hundred ten".