10012121020111 has 32 divisors (see below), whose sum is σ = 11613782505600. Its totient is φ = 8454058905600.

The previous prime is 10012121020103. The next prime is 10012121020127. The reversal of 10012121020111 is 11102012121001.

It is a happy number.

It is not a de Polignac number, because 10012121020111 - 2³ = 10012121020103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012121020091 and 10012121020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012121023111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234449061 + ... + 234491761.

It is an arithmetic number, because the mean of its divisors is an integer number (362930703300).

Almost surely, 2^{10012121020111} is an apocalyptic number.

10012121020111 is a deficient number, since it is larger than the sum of its proper divisors (1601661485489).

10012121020111 is a wasteful number, since it uses less digits than its factorization.

10012121020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44179.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10012121020111 its reverse (11102012121001), we get a palindrome (21114133141112).

The spelling of 10012121020111 in words is "ten trillion, twelve billion, one hundred twenty-one million, twenty thousand, one hundred eleven".