101000210021221 has 4 divisors (see below), whose sum is σ = 115428811452832. Its totient is φ = 86571608589612.

The previous prime is 101000210021131. The next prime is 101000210021281. The reversal of 101000210021221 is 122120012000101.

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 a de Polignac number, because none of the positive numbers 2^k-101000210021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101000210021281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7214300715795 + ... + 7214300715808.

It is an arithmetic number, because the mean of its divisors is an integer number (28857202863208).

Almost surely, 2^{101000210021221} is an apocalyptic number.

It is an amenable number.

101000210021221 is a deficient number, since it is larger than the sum of its proper divisors (14428601431611).

101000210021221 is an equidigital number, since it uses as much as digits as its factorization.

101000210021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428601431610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101000210021221 its reverse (122120012000101), we get a palindrome (223120222021322).

The spelling of 101000210021221 in words is "one hundred one trillion, two hundred ten million, twenty-one thousand, two hundred twenty-one".