1101012210421 has 2 divisors, whose sum is σ = 1101012210422. Its totient is φ = 1101012210420.

The previous prime is 1101012210413. The next prime is 1101012210479. The reversal of 1101012210421 is 1240122101011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551766696100 + 549245514321 = 742810^2 + 741111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101012210421 - 2³ = 1101012210413 is a prime.

It is a super-2 number, since 2×1101012210421² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1101012210395 and 1101012210404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101012210491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550506105210 + 550506105211.

It is an arithmetic number, because the mean of its divisors is an integer number (550506105211).

Almost surely, 2^{1101012210421} is an apocalyptic number.

It is an amenable number.

1101012210421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101012210421 is an equidigital number, since it uses as much as digits as its factorization.

1101012210421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1101012210421 its reverse (1240122101011), we get a palindrome (2341134311432).

The spelling of 1101012210421 in words is "one trillion, one hundred one billion, twelve million, two hundred ten thousand, four hundred twenty-one".