212120131510 has 16 divisors (see below), whose sum is σ = 436361413536. Its totient is φ = 72726902208.

The previous prime is 212120131507. The next prime is 212120131511. The reversal of 212120131510 is 15131021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120131511) 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, 1515143727 + ... + 1515143866.

It is an arithmetic number, because the mean of its divisors is an integer number (27272588346).

Almost surely, 2^212120131510 is an apocalyptic number.

212120131510 is an abundant number, since it is smaller than the sum of its proper divisors (224241282026).

212120131510 is a wasteful number, since it uses less digits than its factorization.

212120131510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030287607.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 212120131510 its reverse (15131021212), we get a palindrome (227251152722).

The spelling of 212120131510 in words is "two hundred twelve billion, one hundred twenty million, one hundred thirty-one thousand, five hundred ten".