21213200130 has 16 divisors (see below), whose sum is σ = 50911680384. Its totient is φ = 5656853360.

The previous prime is 21213200093. The next prime is 21213200137. The reversal of 21213200130 is 3100231212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21213200137) 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, 353553306 + ... + 353553365.

It is an arithmetic number, because the mean of its divisors is an integer number (3181980024).

Almost surely, 2^21213200130 is an apocalyptic number.

21213200130 is an abundant number, since it is smaller than the sum of its proper divisors (29698480254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21213200130 is a wasteful number, since it uses less digits than its factorization.

21213200130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707106681.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21213200130 its reverse (3100231212), we get a palindrome (24313431342).

The spelling of 21213200130 in words is "twenty-one billion, two hundred thirteen million, two hundred thousand, one hundred thirty".