21023103000001 has 8 divisors (see below), whose sum is σ = 21599036669160. Its totient is φ = 20447576788608.

The previous prime is 21023102999929. The next prime is 21023103000041. The reversal of 21023103000001 is 10000030132012.

It can be written as a sum of positive squares in 4 ways, for example, as 7596748688400 + 13426354311601 = 2756220^2 + 3664199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023103000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023103000041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101759836 + ... + 101966221.

It is an arithmetic number, because the mean of its divisors is an integer number (2699879583645).

Almost surely, 2^{21023103000001} is an apocalyptic number.

It is an amenable number.

21023103000001 is a deficient number, since it is larger than the sum of its proper divisors (575933669159).

21023103000001 is a wasteful number, since it uses less digits than its factorization.

21023103000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203728883.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21023103000001 its reverse (10000030132012), we get a palindrome (31023133132013).

The spelling of 21023103000001 in words is "twenty-one trillion, twenty-three billion, one hundred three million, one", and thus it is an aban number.