21030312201000 has 128 divisors (see below), whose sum is σ = 65793363816960. Its totient is φ = 5592802080000.

The previous prime is 21030312200999. The next prime is 21030312201079. The reversal of 21030312201000 is 10221303012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 8449551 + ... + 10651550.

It is an arithmetic number, because the mean of its divisors is an integer number (514010654820).

Almost surely, 2^{21030312201000} is an apocalyptic number.

21030312201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030312201000 is an abundant number, since it is smaller than the sum of its proper divisors (44763051615960).

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

21030312201000 is a wasteful number, since it uses less digits than its factorization.

21030312201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19101492 (or 19101478 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21030312201000 its reverse (10221303012), we get a palindrome (21040533504012).

The spelling of 21030312201000 in words is "twenty-one trillion, thirty billion, three hundred twelve million, two hundred one thousand".