10212105125542 has 4 divisors (see below), whose sum is σ = 15318157688316. Its totient is φ = 5106052562770.

The previous prime is 10212105125483. The next prime is 10212105125543. The reversal of 10212105125542 is 24552150121201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212105125543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553026281384 + ... + 2553026281387.

It is an arithmetic number, because the mean of its divisors is an integer number (3829539422079).

Almost surely, 2^{10212105125542} is an apocalyptic number.

10212105125542 is a deficient number, since it is larger than the sum of its proper divisors (5106052562774).

10212105125542 is an equidigital number, since it uses as much as digits as its factorization.

10212105125542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106052562773.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 10212105125542 its reverse (24552150121201), we get a palindrome (34764255246743).

The spelling of 10212105125542 in words is "ten trillion, two hundred twelve billion, one hundred five million, one hundred twenty-five thousand, five hundred forty-two".