213121130101 has 8 divisors (see below), whose sum is σ = 232507233504. Its totient is φ = 193736935920.

The previous prime is 213121130087. The next prime is 213121130111. The reversal of 213121130101 is 101031121312.

It is a happy number.

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

It is not a de Polignac number, because 213121130101 - 2⁷ = 213121129973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121130111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238710 + ... + 695143.

It is an arithmetic number, because the mean of its divisors is an integer number (29063404188).

Almost surely, 2^213121130101 is an apocalyptic number.

It is an amenable number.

213121130101 is a deficient number, since it is larger than the sum of its proper divisors (19386103403).

213121130101 is a wasteful number, since it uses less digits than its factorization.

213121130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954611.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 213121130101 its reverse (101031121312), we get a palindrome (314152251413).

The spelling of 213121130101 in words is "two hundred thirteen billion, one hundred twenty-one million, one hundred thirty thousand, one hundred one".