213010401112121 has 8 divisors (see below), whose sum is σ = 218249655054984. Its totient is φ = 207773236612480.

The previous prime is 213010401112073. The next prime is 213010401112139. The reversal of 213010401112121 is 121211104010312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4841918590096 + 208168482522025 = 2200436^2 + 14428045^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 213010401112121 - 2¹⁸ = 213010400849977 is a prime.

It is a super-2 number, since 2×213010401112121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213010401112093 and 213010401112102.

It is not an unprimeable number, because it can be changed into a prime (213010401112321) 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 7 ways as a sum of consecutive naturals, for example, 522154406 + ... + 522562191.

It is an arithmetic number, because the mean of its divisors is an integer number (27281206881873).

Almost surely, 2^{213010401112121} is an apocalyptic number.

It is an amenable number.

213010401112121 is a deficient number, since it is larger than the sum of its proper divisors (5239253942863).

213010401112121 is a wasteful number, since it uses less digits than its factorization.

213010401112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044721611.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 213010401112121 its reverse (121211104010312), we get a palindrome (334221505122433).

The spelling of 213010401112121 in words is "two hundred thirteen trillion, ten billion, four hundred one million, one hundred twelve thousand, one hundred twenty-one".