210021012112001 has 4 divisors (see below), whose sum is σ = 221074749591600. Its totient is φ = 198967274632404.

The previous prime is 210021012111991. The next prime is 210021012112183. The reversal of 210021012112001 is 100211210120012.

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 210021012112001 - 2¹⁰ = 210021012110977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021012112201) 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, 5526868739771 + ... + 5526868739808.

It is an arithmetic number, because the mean of its divisors is an integer number (55268687397900).

Almost surely, 2^{210021012112001} is an apocalyptic number.

It is an amenable number.

210021012112001 is a deficient number, since it is larger than the sum of its proper divisors (11053737479599).

210021012112001 is a wasteful number, since it uses less digits than its factorization.

210021012112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053737479598.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210021012112001 its reverse (100211210120012), we get a palindrome (310232222232013).

The spelling of 210021012112001 in words is "two hundred ten trillion, twenty-one billion, twelve million, one hundred twelve thousand, one".