121321312200030 has 128 divisors (see below), whose sum is σ = 301166067879936. Its totient is φ = 31246004275200.

The previous prime is 121321312200001. The next prime is 121321312200091. The reversal of 121321312200030 is 30002213123121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4162379917 + ... + 4162409063.

It is an arithmetic number, because the mean of its divisors is an integer number (2352859905312).

Almost surely, 2^{121321312200030} is an apocalyptic number.

121321312200030 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 121321312200030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150583033939968).

121321312200030 is an abundant number, since it is smaller than the sum of its proper divisors (179844755679906).

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

121321312200030 is a wasteful number, since it uses less digits than its factorization.

121321312200030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38002.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121321312200030 its reverse (30002213123121), we get a palindrome (151323525323151).

The spelling of 121321312200030 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred thousand, thirty".