213113020123001 has 4 divisors (see below), whose sum is σ = 213113135338404. Its totient is φ = 213112904907600.

The previous prime is 213113020122851. The next prime is 213113020123027. The reversal of 213113020123001 is 100321020311312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129864713472400 + 83248306650601 = 11395820^2 + 9124051^2 .

It is a cyclic number.

It is not a de Polignac number, because 213113020123001 - 2¹⁴ = 213113020106617 is a prime.

It is a super-2 number, since 2×213113020123001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213113020113001) 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, 54787130 + ... + 58547891.

It is an arithmetic number, because the mean of its divisors is an integer number (53278283834601).

Almost surely, 2^{213113020123001} is an apocalyptic number.

It is an amenable number.

213113020123001 is a deficient number, since it is larger than the sum of its proper divisors (115215403).

213113020123001 is a wasteful number, since it uses less digits than its factorization.

213113020123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115215402.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213113020123001 its reverse (100321020311312), we get a palindrome (313434040434313).

The spelling of 213113020123001 in words is "two hundred thirteen trillion, one hundred thirteen billion, twenty million, one hundred twenty-three thousand, one".