21012033010001 has 16 divisors (see below), whose sum is σ = 23298568165248. Its totient is φ = 18788238403200.

The previous prime is 21012033009983. The next prime is 21012033010019. The reversal of 21012033010001 is 10001033021012.

It is an interprime number because it is at equal distance from previous prime (21012033009983) and next prime (21012033010019).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21012033010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012033010061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28348220 + ... + 29079986.

It is an arithmetic number, because the mean of its divisors is an integer number (1456160510328).

Almost surely, 2^{21012033010001} is an apocalyptic number.

It is an amenable number.

21012033010001 is a deficient number, since it is larger than the sum of its proper divisors (2286535155247).

21012033010001 is a wasteful number, since it uses less digits than its factorization.

21012033010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774632.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21012033010001 its reverse (10001033021012), we get a palindrome (31013066031013).

The spelling of 21012033010001 in words is "twenty-one trillion, twelve billion, thirty-three million, ten thousand, one".