213020020101 has 12 divisors (see below), whose sum is σ = 330398398752. Its totient is φ = 121725725688.

The previous prime is 213020020093. The next prime is 213020020163. The reversal of 213020020101 is 101020020312.

It is not a de Polignac number, because 213020020101 - 2³ = 213020020093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020020501) 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, 724557745 + ... + 724558038.

It is an arithmetic number, because the mean of its divisors is an integer number (27533199896).

Almost surely, 2^213020020101 is an apocalyptic number.

213020020101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213020020101 is a deficient number, since it is larger than the sum of its proper divisors (117378378651).

213020020101 is a wasteful number, since it uses less digits than its factorization.

213020020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449115800 (or 1449115793 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 213020020101 its reverse (101020020312), we get a palindrome (314040040413).

The spelling of 213020020101 in words is "two hundred thirteen billion, twenty million, twenty thousand, one hundred one".