101265111221 has 8 divisors (see below), whose sum is σ = 104541441024. Its totient is φ = 97989388560.

The previous prime is 101265111191. The next prime is 101265111323. The reversal of 101265111221 is 122111562101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101265111221 - 2¹⁰ = 101265110197 is a prime.

It is a super-2 number, since 2×101265111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101265111121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200180 + ... + 492546.

It is an arithmetic number, because the mean of its divisors is an integer number (13067680128).

Almost surely, 2^101265111221 is an apocalyptic number.

It is an amenable number.

101265111221 is a deficient number, since it is larger than the sum of its proper divisors (3276329803).

101265111221 is a wasteful number, since it uses less digits than its factorization.

101265111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303571.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 101265111221 its reverse (122111562101), we get a palindrome (223376673322).

The spelling of 101265111221 in words is "one hundred one billion, two hundred sixty-five million, one hundred eleven thousand, two hundred twenty-one".