101210122021221 has 16 divisors (see below), whose sum is σ = 150178545819520. Its totient is φ = 67366483742880.

The previous prime is 101210122021199. The next prime is 101210122021231. The reversal of 101210122021221 is 122120221012101.

101210122021221 is a `hidden beast` number, since 1 + 0 + 1 + 210 + 1 + 220 + 212 + 21 = 666.

It is not a de Polignac number, because 101210122021221 - 2¹⁷ = 101210121890149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210122021194 and 101210122021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210122021231) 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, 2970286480 + ... + 2970320553.

It is an arithmetic number, because the mean of its divisors is an integer number (9386159113720).

Almost surely, 2^{101210122021221} is an apocalyptic number.

It is an amenable number.

101210122021221 is a deficient number, since it is larger than the sum of its proper divisors (48968423798299).

101210122021221 is an equidigital number, since it uses as much as digits as its factorization.

101210122021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940607673 (or 5940607667 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 101210122021221 its reverse (122120221012101), we get a palindrome (223330343033322).

The spelling of 101210122021221 in words is "one hundred one trillion, two hundred ten billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-one".