21020220303000 has 256 divisors, whose sum is σ = 65712183638400. Its totient is φ = 5594369638400.

The previous prime is 21020220302971. The next prime is 21020220303223. The reversal of 21020220303000 is 30302202012.

It is a super-3 number, since 3×21020220303000³ (a number of 41 digits) contains 333 as substring.

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

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, 4846716832 + ... + 4846721168.

Almost surely, 2^{21020220303000} is an apocalyptic number.

21020220303000 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 21020220303000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32856091819200).

21020220303000 is an abundant number, since it is smaller than the sum of its proper divisors (44691963335400).

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

21020220303000 is a wasteful number, since it uses less digits than its factorization.

21020220303000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167 (or 7153 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21020220303000 its reverse (30302202012), we get a palindrome (21050522505012).

The spelling of 21020220303000 in words is "twenty-one trillion, twenty billion, two hundred twenty million, three hundred three thousand".