10001122121211 has 16 divisors (see below), whose sum is σ = 14694552719616. Its totient is φ = 6011407928736.

The previous prime is 10001122121167. The next prime is 10001122121231. The reversal of 10001122121211 is 11212122110001.

It is a happy number.

10001122121211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10001122121211 - 2⁹ = 10001122120699 is a prime.

It is a super-2 number, since 2×10001122121211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10001122121231) 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, 2981847495 + ... + 2981850848.

It is an arithmetic number, because the mean of its divisors is an integer number (918409544976).

Almost surely, 2^{10001122121211} is an apocalyptic number.

10001122121211 is a deficient number, since it is larger than the sum of its proper divisors (4693430598405).

10001122121211 is a wasteful number, since it uses less digits than its factorization.

10001122121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963698402.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10001122121211 its reverse (11212122110001), we get a palindrome (21213244231212).

The spelling of 10001122121211 in words is "ten trillion, one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".