101221021106 has 4 divisors (see below), whose sum is σ = 151831531662. Its totient is φ = 50610510552.

The previous prime is 101221021091. The next prime is 101221021129. The reversal of 101221021106 is 601120122101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601120122101 = 54251 ⋅11080351.

It can be written as a sum of positive squares in only one way, i.e., 71899595881 + 29321425225 = 268141^2 + 171235^2 .

It is a super-2 number, since 2×101221021106² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25305255275 + ... + 25305255278.

Almost surely, 2^101221021106 is an apocalyptic number.

101221021106 is a deficient number, since it is larger than the sum of its proper divisors (50610510556).

101221021106 is an equidigital number, since it uses as much as digits as its factorization.

101221021106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50610510555.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 101221021106 its reverse (601120122101), we get a palindrome (702341143207).

The spelling of 101221021106 in words is "one hundred one billion, two hundred twenty-one million, twenty-one thousand, one hundred six".