212131102555 has 4 divisors (see below), whose sum is σ = 254557323072. Its totient is φ = 169704882040.

The previous prime is 212131102537. The next prime is 212131102577. The reversal of 212131102555 is 555201131212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212131102555 - 2³⁵ = 177771364187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21213110251 + ... + 21213110260.

It is an arithmetic number, because the mean of its divisors is an integer number (63639330768).

Almost surely, 2^212131102555 is an apocalyptic number.

212131102555 is a deficient number, since it is larger than the sum of its proper divisors (42426220517).

212131102555 is an equidigital number, since it uses as much as digits as its factorization.

212131102555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42426220516.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 212131102555 its reverse (555201131212), we get a palindrome (767332233767).

The spelling of 212131102555 in words is "two hundred twelve billion, one hundred thirty-one million, one hundred two thousand, five hundred fifty-five".