1112211010021 has 4 divisors (see below), whose sum is σ = 1135875074112. Its totient is φ = 1088546945932.

The previous prime is 1112211010007. The next prime is 1112211010063. The reversal of 1112211010021 is 1200101122111.

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 1112211010021 - 2⁵ = 1112211009989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112211009983 and 1112211010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112211010321) 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, 11832031975 + ... + 11832032068.

It is an arithmetic number, because the mean of its divisors is an integer number (283968768528).

Almost surely, 2^{1112211010021} is an apocalyptic number.

It is an amenable number.

1112211010021 is a deficient number, since it is larger than the sum of its proper divisors (23664064091).

1112211010021 is an equidigital number, since it uses as much as digits as its factorization.

1112211010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23664064090.

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

Adding to 1112211010021 its reverse (1200101122111), we get a palindrome (2312312132132).

The spelling of 1112211010021 in words is "one trillion, one hundred twelve billion, two hundred eleven million, ten thousand, twenty-one".