21103020003000 has 128 divisors (see below), whose sum is σ = 70906147341120. Its totient is φ = 5194589529600.

The previous prime is 21103020002993. The next prime is 21103020003041. The reversal of 21103020003000 is 30002030112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 270512539 + ... + 270590538.

Almost surely, 2^{21103020003000} is an apocalyptic number.

21103020003000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103020003000 is an abundant number, since it is smaller than the sum of its proper divisors (49803127338120).

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

21103020003000 is a wasteful number, since it uses less digits than its factorization.

21103020003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541103114 (or 541103100 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21103020003000 its reverse (30002030112), we get a palindrome (21133022033112).

The spelling of 21103020003000 in words is "twenty-one trillion, one hundred three billion, twenty million, three thousand".