213000023120 has 40 divisors (see below), whose sum is σ = 500128291080. Its totient is φ = 84356441600.

The previous prime is 213000023083. The next prime is 213000023183. The reversal of 213000023120 is 21320000312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69795299344 + 143204723776 = 264188^2 + 378424^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 213000023095 and 213000023104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13172615 + ... + 13188774.

It is an arithmetic number, because the mean of its divisors is an integer number (12503207277).

Almost surely, 2^213000023120 is an apocalyptic number.

213000023120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213000023120 is an abundant number, since it is smaller than the sum of its proper divisors (287128267960).

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

213000023120 is a wasteful number, since it uses less digits than its factorization.

213000023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26361503 (or 26361497 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 213000023120 its reverse (21320000312), we get a palindrome (234320023432).

The spelling of 213000023120 in words is "two hundred thirteen billion, twenty-three thousand, one hundred twenty".