10111000211021 has 6 divisors (see below), whose sum is σ = 10569722338350. Its totient is φ = 9671391505688.

The previous prime is 10111000210991. The next prime is 10111000211029. The reversal of 10111000211021 is 12011200011101.

It can be written as a sum of positive squares in only one way, i.e., 9205847764996 + 905152446025 = 3034114^2 + 951395^2 .

It is not a de Polignac number, because 10111000211021 - 2²² = 10110996016717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111000210993 and 10111000211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111000211029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9556710446 + ... + 9556711503.

It is an arithmetic number, because the mean of its divisors is an integer number (1761620389725).

Almost surely, 2^{10111000211021} is an apocalyptic number.

It is an amenable number.

10111000211021 is a deficient number, since it is larger than the sum of its proper divisors (458722127329).

10111000211021 is an equidigital number, since it uses as much as digits as its factorization.

10111000211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19113421995 (or 19113421972 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10111000211021 its reverse (12011200011101), we get a palindrome (22122200222122).

The spelling of 10111000211021 in words is "ten trillion, one hundred eleven billion, two hundred eleven thousand, twenty-one".