101011020221 has 16 divisors (see below), whose sum is σ = 103525171200. Its totient is φ = 98512687728.

The previous prime is 101011020203. The next prime is 101011020233. The reversal of 101011020221 is 122020110101.

It is a cyclic number.

It is not a de Polignac number, because 101011020221 - 2⁶ = 101011020157 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 (101011020421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19131860 + ... + 19137138.

It is an arithmetic number, because the mean of its divisors is an integer number (6470323200).

Almost surely, 2^101011020221 is an apocalyptic number.

It is an amenable number.

101011020221 is a deficient number, since it is larger than the sum of its proper divisors (2514150979).

101011020221 is an equidigital number, since it uses as much as digits as its factorization.

101011020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101011020221 its reverse (122020110101), we get a palindrome (223031130322).

The spelling of 101011020221 in words is "one hundred one billion, eleven million, twenty thousand, two hundred twenty-one".