10111220121011 has 8 divisors (see below), whose sum is σ = 10360141592064. Its totient is φ = 9862924869000.

The previous prime is 10111220120999. The next prime is 10111220121017. The reversal of 10111220121011 is 11012102211101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10111220121011 - 2³⁰ = 10110146379187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111220121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156522071 + ... + 156586656.

It is an arithmetic number, because the mean of its divisors is an integer number (1295017699008).

Almost surely, 2^{10111220121011} is an apocalyptic number.

10111220121011 is a deficient number, since it is larger than the sum of its proper divisors (248921471053).

10111220121011 is an equidigital number, since it uses as much as digits as its factorization.

10111220121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313109521.

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

Adding to 10111220121011 its reverse (11012102211101), we get a palindrome (21123322332112).

The spelling of 10111220121011 in words is "ten trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, eleven".