2130121321000 has 128 divisors (see below), whose sum is σ = 5150021160960. Its totient is φ = 823802304000.

The previous prime is 2130121320989. The next prime is 2130121321051. The reversal of 2130121321000 is 1231210312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34161852 + ... + 34224148.

It is an arithmetic number, because the mean of its divisors is an integer number (40234540320).

Almost surely, 2^{2130121321000} is an apocalyptic number.

2130121321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130121321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2575010580480).

2130121321000 is an abundant number, since it is smaller than the sum of its proper divisors (3019899839960).

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

2130121321000 is a wasteful number, since it uses less digits than its factorization.

2130121321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63452 (or 63438 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2130121321000 its reverse (1231210312), we get a palindrome (2131352531312).

The spelling of 2130121321000 in words is "two trillion, one hundred thirty billion, one hundred twenty-one million, three hundred twenty-one thousand".