121023123300030 has 128 divisors (see below), whose sum is σ = 336553298611200. Its totient is φ = 27278876335104.

The previous prime is 121023123300029. The next prime is 121023123300041. The reversal of 121023123300030 is 30003321320121.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 90380236 + ... + 91709504.

It is an arithmetic number, because the mean of its divisors is an integer number (2629322645400).

Almost surely, 2^{121023123300030} is an apocalyptic number.

121023123300030 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 121023123300030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168276649305600).

121023123300030 is an abundant number, since it is smaller than the sum of its proper divisors (215530175311170).

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

121023123300030 is a wasteful number, since it uses less digits than its factorization.

121023123300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335298.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 121023123300030 its reverse (30003321320121), we get a palindrome (151026444620151).

The spelling of 121023123300030 in words is "one hundred twenty-one trillion, twenty-three billion, one hundred twenty-three million, three hundred thousand, thirty".