213121210301001 has 12 divisors (see below), whose sum is σ = 307842313533040. Its totient is φ = 142080545950200.

The previous prime is 213121210300963. The next prime is 213121210301003. The reversal of 213121210301001 is 100103012121312.

213121210301001 is a `hidden beast` number, since 2 + 131 + 21 + 210 + 301 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 213121210301001 - 2¹⁷ = 213121210169929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213121210301003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16503475 + ... + 26431176.

Almost surely, 2^{213121210301001} is an apocalyptic number.

It is an amenable number.

213121210301001 is a deficient number, since it is larger than the sum of its proper divisors (94721103232039).

213121210301001 is a wasteful number, since it uses less digits than its factorization.

213121210301001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486196 (or 43486193 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213121210301001 its reverse (100103012121312), we get a palindrome (313224222422313).

The spelling of 213121210301001 in words is "two hundred thirteen trillion, one hundred twenty-one billion, two hundred ten million, three hundred one thousand, one".