10001201000021 has 8 divisors (see below), whose sum is σ = 12469029818304. Its totient is φ = 7793143636320.

The previous prime is 10001201000017. The next prime is 10001201000051. The reversal of 10001201000021 is 12000010210001.

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

It is not a de Polignac number, because 10001201000021 - 2² = 10001201000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001200999972 and 10001201000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001201000051) 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, 64942863560 + ... + 64942863713.

It is an arithmetic number, because the mean of its divisors is an integer number (1558628727288).

Almost surely, 2^{10001201000021} is an apocalyptic number.

10001201000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001201000021 is a deficient number, since it is larger than the sum of its proper divisors (2467828818283).

10001201000021 is a wasteful number, since it uses less digits than its factorization.

10001201000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129885727291.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10001201000021 its reverse (12000010210001), we get a palindrome (22001211210022).

It can be divided in two parts, 1000 and 1201000021, that added together give a palindrome (1201001021).

The spelling of 10001201000021 in words is "ten trillion, one billion, two hundred one million, twenty-one", and thus it is an aban number.