10212121111011 has 16 divisors (see below), whose sum is σ = 13665678000000. Its totient is φ = 6783349442688.

The previous prime is 10212121110979. The next prime is 10212121111021. The reversal of 10212121111011 is 11011112121201.

It is not a de Polignac number, because 10212121111011 - 2⁵ = 10212121110979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10212121111021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853761 + ... + 4884738.

It is an arithmetic number, because the mean of its divisors is an integer number (854104875000).

Almost surely, 2^{10212121111011} is an apocalyptic number.

10212121111011 is a deficient number, since it is larger than the sum of its proper divisors (3453556888989).

10212121111011 is a wasteful number, since it uses less digits than its factorization.

10212121111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740338.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10212121111011 its reverse (11011112121201), we get a palindrome (21223233232212).

The spelling of 10212121111011 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred eleven thousand, eleven".