101100901221 has 16 divisors (see below), whose sum is σ = 150164164800. Its totient is φ = 67227327504.

The previous prime is 101100901163. The next prime is 101100901241. The reversal of 101100901221 is 122109001101.

It is a happy number.

It is not a de Polignac number, because 101100901221 - 2¹⁷ = 101100770149 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101100901194 and 101100901203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100901241) 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, 4802451 + ... + 4823456.

It is an arithmetic number, because the mean of its divisors is an integer number (9385260300).

Almost surely, 2^101100901221 is an apocalyptic number.

It is an amenable number.

101100901221 is a deficient number, since it is larger than the sum of its proper divisors (49063263579).

101100901221 is an equidigital number, since it uses as much as digits as its factorization.

101100901221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626305 (or 9626299 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 101100901221 its reverse (122109001101), we get a palindrome (223209902322).

The spelling of 101100901221 in words is "one hundred one billion, one hundred million, nine hundred one thousand, two hundred twenty-one".