21030320101033 has 4 divisors (see below), whose sum is σ = 21034270946128. Its totient is φ = 21026369255940.

The previous prime is 21030320101019. The next prime is 21030320101067. The reversal of 21030320101033 is 33010102303012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21030320101033 - 2⁵ = 21030320101001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21030320101033.

It is not an unprimeable number, because it can be changed into a prime (21030320101093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975414563 + ... + 1975425208.

It is an arithmetic number, because the mean of its divisors is an integer number (5258567736532).

Almost surely, 2^{21030320101033} is an apocalyptic number.

It is an amenable number.

21030320101033 is a deficient number, since it is larger than the sum of its proper divisors (3950845095).

21030320101033 is an equidigital number, since it uses as much as digits as its factorization.

21030320101033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950845094.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21030320101033 its reverse (33010102303012), we get a palindrome (54040422404045).

The spelling of 21030320101033 in words is "twenty-one trillion, thirty billion, three hundred twenty million, one hundred one thousand, thirty-three".