210111020121001 has 16 divisors (see below), whose sum is σ = 212690090890368. Its totient is φ = 207533089814400.

The previous prime is 210111020120891. The next prime is 210111020121017. The reversal of 210111020121001 is 100121020111012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210111020121001 - 2¹¹ = 210111020118953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210111020121071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11951019031 + ... + 11951036611.

It is an arithmetic number, because the mean of its divisors is an integer number (13293130680648).

Almost surely, 2^{210111020121001} is an apocalyptic number.

It is an amenable number.

210111020121001 is a deficient number, since it is larger than the sum of its proper divisors (2579070769367).

210111020121001 is a wasteful number, since it uses less digits than its factorization.

210111020121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41712.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210111020121001 its reverse (100121020111012), we get a palindrome (310232040232013).

The spelling of 210111020121001 in words is "two hundred ten trillion, one hundred eleven billion, twenty million, one hundred twenty-one thousand, one".