121234143030 has 256 divisors, whose sum is σ = 411225292800. Its totient is φ = 22029719040.

The previous prime is 121234142971. The next prime is 121234143047. The reversal of 121234143030 is 30341432121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 464331 + ... + 676809.

It is an arithmetic number, because the mean of its divisors is an integer number (1606348800).

Almost surely, 2^121234143030 is an apocalyptic number.

121234143030 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 121234143030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205612646400).

121234143030 is an abundant number, since it is smaller than the sum of its proper divisors (289991149770).

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

121234143030 is a wasteful number, since it uses less digits than its factorization.

121234143030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212539.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121234143030 its reverse (30341432121), we get a palindrome (151575575151).

The spelling of 121234143030 in words is "one hundred twenty-one billion, two hundred thirty-four million, one hundred forty-three thousand, thirty".