101011202221 has 4 divisors (see below), whose sum is σ = 101024049952. Its totient is φ = 100998354492.

The previous prime is 101011202203. The next prime is 101011202231. The reversal of 101011202221 is 122202110101.

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: 122202110101 = 313 ⋅390422077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101011202221 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 (101011202231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6412065 + ... + 6427798.

It is an arithmetic number, because the mean of its divisors is an integer number (25256012488).

Almost surely, 2^101011202221 is an apocalyptic number.

It is an amenable number.

101011202221 is a deficient number, since it is larger than the sum of its proper divisors (12847731).

101011202221 is an equidigital number, since it uses as much as digits as its factorization.

101011202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12847730.

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

Adding to 101011202221 its reverse (122202110101), we get a palindrome (223213312322).

The spelling of 101011202221 in words is "one hundred one billion, eleven million, two hundred two thousand, two hundred twenty-one".