101221013101 has 8 divisors (see below), whose sum is σ = 112523608064. Its totient is φ = 90420755760.

The previous prime is 101221013087. The next prime is 101221013123. The reversal of 101221013101 is 101310122101.

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 101221013101 - 2⁷ = 101221012973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221013141) 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, 125583981 + ... + 125584786.

It is an arithmetic number, because the mean of its divisors is an integer number (14065451008).

Almost surely, 2^101221013101 is an apocalyptic number.

It is an amenable number.

101221013101 is a deficient number, since it is larger than the sum of its proper divisors (11302594963).

101221013101 is a wasteful number, since it uses less digits than its factorization.

101221013101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251168811.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 101221013101 its reverse (101310122101), we get a palindrome (202531135202).

The spelling of 101221013101 in words is "one hundred one billion, two hundred twenty-one million, thirteen thousand, one hundred one".