21120012010010 has 32 divisors (see below), whose sum is σ = 38244988449792. Its totient is φ = 8397192569920.

The previous prime is 21120012010007. The next prime is 21120012010039. The reversal of 21120012010010 is 1001021002112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21120012009973 and 21120012010000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890452 + ... + 6768591.

It is an arithmetic number, because the mean of its divisors is an integer number (1195155889056).

Almost surely, 2^{21120012010010} is an apocalyptic number.

21120012010010 is a deficient number, since it is larger than the sum of its proper divisors (17124976439782).

21120012010010 is a wasteful number, since it uses less digits than its factorization.

21120012010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660518.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21120012010010 its reverse (1001021002112), we get a palindrome (22121033012122).

The spelling of 21120012010010 in words is "twenty-one trillion, one hundred twenty billion, twelve million, ten thousand, ten".