1112101100021 has 2 divisors, whose sum is σ = 1112101100022. Its totient is φ = 1112101100020.

The previous prime is 1112101100003. The next prime is 1112101100057. The reversal of 1112101100021 is 1200011012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040298002500 + 71803097521 = 1019950^2 + 267961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112101100021 - 2¹⁴ = 1112101083637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1112101099975 and 1112101100011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112101100221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556050550010 + 556050550011.

It is an arithmetic number, because the mean of its divisors is an integer number (556050550011).

Almost surely, 2^{1112101100021} is an apocalyptic number.

It is an amenable number.

1112101100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112101100021 is an equidigital number, since it uses as much as digits as its factorization.

1112101100021 is an evil number, because the sum of its binary digits is even.

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

Adding to 1112101100021 its reverse (1200011012111), we get a palindrome (2312112112132).

The spelling of 1112101100021 in words is "one trillion, one hundred twelve billion, one hundred one million, one hundred thousand, twenty-one".