101220010221 has 16 divisors (see below), whose sum is σ = 154978007040. Its totient is φ = 58116751920.

The previous prime is 101220010181. The next prime is 101220010231. The reversal of 101220010221 is 122010022101.

It is not a de Polignac number, because 101220010221 - 2²³ = 101211621613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101220010197 and 101220010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220010231) 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, 80717085 + ... + 80718338.

It is an arithmetic number, because the mean of its divisors is an integer number (9686125440).

Almost surely, 2^101220010221 is an apocalyptic number.

101220010221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101220010221 is a deficient number, since it is larger than the sum of its proper divisors (53757996819).

101220010221 is a wasteful number, since it uses less digits than its factorization.

101220010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161435456.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101220010221 its reverse (122010022101), we get a palindrome (223230032322).

The spelling of 101220010221 in words is "one hundred one billion, two hundred twenty million, ten thousand, two hundred twenty-one".