10212121110004 has 36 divisors (see below), whose sum is σ = 19653644146500. Its totient is φ = 4639491134080.

The previous prime is 10212121109977. The next prime is 10212121110043. The reversal of 10212121110004 is 40001112121201.

It can be written as a sum of positive squares in 2 ways, for example, as 3643715957904 + 6568405152100 = 1908852^2 + 2562890^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10212121110004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4469569 + ... + 6356200.

It is an arithmetic number, because the mean of its divisors is an integer number (545934559625).

Almost surely, 2^{10212121110004} is an apocalyptic number.

It is an amenable number.

10212121110004 is a deficient number, since it is larger than the sum of its proper divisors (9441523036496).

10212121110004 is a wasteful number, since it uses less digits than its factorization.

10212121110004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827744 (or 10827731 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10212121110004 its reverse (40001112121201), we get a palindrome (50213233231205).

The spelling of 10212121110004 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, four".