10111211002021 has 4 divisors (see below), whose sum is σ = 10209378099232. Its totient is φ = 10013043904812.

The previous prime is 10111211002003. The next prime is 10111211002027. The reversal of 10111211002021 is 12020011211101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10111211002021 - 2⁵ = 10111211001989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111211001992 and 10111211002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111211002027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49083548451 + ... + 49083548656.

It is an arithmetic number, because the mean of its divisors is an integer number (2552344524808).

Almost surely, 2^{10111211002021} is an apocalyptic number.

It is an amenable number.

10111211002021 is a deficient number, since it is larger than the sum of its proper divisors (98167097211).

10111211002021 is an equidigital number, since it uses as much as digits as its factorization.

10111211002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98167097210.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10111211002021 its reverse (12020011211101), we get a palindrome (22131222213122).

The spelling of 10111211002021 in words is "ten trillion, one hundred eleven billion, two hundred eleven million, two thousand, twenty-one".