10101212011121 has 32 divisors (see below), whose sum is σ = 12708128649216. Its totient is φ = 7864671315600.

The previous prime is 10101212011103. The next prime is 10101212011139. The reversal of 10101212011121 is 12111021210101.

It is an interprime number because it is at equal distance from previous prime (10101212011103) and next prime (10101212011139).

It is a de Polignac number, because none of the positive numbers 2^k-10101212011121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101212011096 and 10101212011105.

It is not an unprimeable number, because it can be changed into a prime (10101212011421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11028866 + ... + 11909588.

It is an arithmetic number, because the mean of its divisors is an integer number (397129020288).

Almost surely, 2^{10101212011121} is an apocalyptic number.

10101212011121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10101212011121 is a deficient number, since it is larger than the sum of its proper divisors (2606916638095).

10101212011121 is an equidigital number, since it uses as much as digits as its factorization.

10101212011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881994 (or 881972 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10101212011121 its reverse (12111021210101), we get a palindrome (22212233221222).

The spelling of 10101212011121 in words is "ten trillion, one hundred one billion, two hundred twelve million, eleven thousand, one hundred twenty-one".