212102131 has 8 divisors (see below), whose sum is σ = 216385344. Its totient is φ = 207829440.

The previous prime is 212102089. The next prime is 212102153. The reversal of 212102131 is 131201212.

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

It is a cyclic number.

It is not a de Polignac number, because 212102131 - 2⁷ = 212102003 is a prime.

It is a super-2 number, since 2×212102131² = 89974627949482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102161) 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, 47526 + ... + 51796.

It is an arithmetic number, because the mean of its divisors is an integer number (27048168).

Almost surely, 2^212102131 is an apocalyptic number.

212102131 is a deficient number, since it is larger than the sum of its proper divisors (4283213).

212102131 is an equidigital number, since it uses as much as digits as its factorization.

212102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212102131 is about 14563.7265492044. The cubic root of 212102131 is about 596.3689319397.

Adding to 212102131 its reverse (131201212), we get a palindrome (343303343).

The spelling of 212102131 in words is "two hundred twelve million, one hundred two thousand, one hundred thirty-one".