10111211001021 has 16 divisors (see below), whose sum is σ = 14792598971136. Its totient is φ = 6104882112576.

The previous prime is 10111211000999. The next prime is 10111211001043. The reversal of 10111211001021 is 12010011211101.

10111211001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10111211000999) and next prime (10111211001043).

It is a de Polignac number, because none of the positive numbers 2^k-10111211001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10111211000988 and 10111211001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111210001021) 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, 2445864165 + ... + 2445868298.

It is an arithmetic number, because the mean of its divisors is an integer number (924537435696).

Almost surely, 2^{10111211001021} is an apocalyptic number.

It is an amenable number.

10111211001021 is a deficient number, since it is larger than the sum of its proper divisors (4681387970115).

10111211001021 is a wasteful number, since it uses less digits than its factorization.

10111211001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891732532.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 10111211001021 its reverse (12010011211101), we get a palindrome (22121222212122).

The spelling of 10111211001021 in words is "ten trillion, one hundred eleven billion, two hundred eleven million, one thousand, twenty-one".