1101012110021 has 2 divisors, whose sum is σ = 1101012110022. Its totient is φ = 1101012110020.

The previous prime is 1101012110017. The next prime is 1101012110039. The reversal of 1101012110021 is 1200112101011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887835062500 + 213177047521 = 942250^2 + 461711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101012110021 - 2² = 1101012110017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101012109984 and 1101012110011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101012110221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550506055010 + 550506055011.

It is an arithmetic number, because the mean of its divisors is an integer number (550506055011).

Almost surely, 2^{1101012110021} is an apocalyptic number.

It is an amenable number.

1101012110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101012110021 is an equidigital number, since it uses as much as digits as its factorization.

1101012110021 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 1101012110021 its reverse (1200112101011), we get a palindrome (2301124211032).

The spelling of 1101012110021 in words is "one trillion, one hundred one billion, twelve million, one hundred ten thousand, twenty-one".