20130221230000 has 200 divisors, whose sum is σ = 58121479772928. Its totient is φ = 6601711776000.

The previous prime is 20130221229973. The next prime is 20130221230003. The reversal of 20130221230000 is 3212203102.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20130221230003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4641622 + ... + 7861621.

Almost surely, 2^{20130221230000} is an apocalyptic number.

20130221230000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130221230000 is an abundant number, since it is smaller than the sum of its proper divisors (37991258542928).

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

20130221230000 is a wasteful number, since it uses less digits than its factorization.

20130221230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12503301 (or 12503280 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20130221230000 its reverse (3212203102), we get a palindrome (20133433433102).

The spelling of 20130221230000 in words is "twenty trillion, one hundred thirty billion, two hundred twenty-one million, two hundred thirty thousand".