101101211021 has 4 divisors (see below), whose sum is σ = 105496915872. Its totient is φ = 96705506172.

The previous prime is 101101210981. The next prime is 101101211051. The reversal of 101101211021 is 120112101101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120112101101 = 241 ⋅498390461.

It is a cyclic number.

It is not a de Polignac number, because 101101211021 - 2¹⁸ = 101100948877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101101210993 and 101101211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101101211051) 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 in 3 ways as a sum of consecutive naturals, for example, 2197852391 + ... + 2197852436.

It is an arithmetic number, because the mean of its divisors is an integer number (26374228968).

Almost surely, 2^101101211021 is an apocalyptic number.

It is an amenable number.

101101211021 is a deficient number, since it is larger than the sum of its proper divisors (4395704851).

101101211021 is an equidigital number, since it uses as much as digits as its factorization.

101101211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395704850.

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

Adding to 101101211021 its reverse (120112101101), we get a palindrome (221213312122).

The spelling of 101101211021 in words is "one hundred one billion, one hundred one million, two hundred eleven thousand, twenty-one".