101021221011 has 16 divisors (see below), whose sum is σ = 143377257600. Its totient is φ = 63085987008.

The previous prime is 101021221001. The next prime is 101021221013. The reversal of 101021221011 is 110122120101.

It is not a de Polignac number, because 101021221011 - 2³⁰ = 99947479187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101021221013) 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, 9951681 + ... + 9961826.

It is an arithmetic number, because the mean of its divisors is an integer number (8961078600).

Almost surely, 2^101021221011 is an apocalyptic number.

101021221011 is a deficient number, since it is larger than the sum of its proper divisors (42356036589).

101021221011 is a wasteful number, since it uses less digits than its factorization.

101021221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913618.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101021221011 its reverse (110122120101), we get a palindrome (211143341112).

The spelling of 101021221011 in words is "one hundred one billion, twenty-one million, two hundred twenty-one thousand, eleven".