101011111011221 has 8 divisors (see below), whose sum is σ = 101616498345600. Its totient is φ = 100405729991248.

The previous prime is 101011111011149. The next prime is 101011111011241. The reversal of 101011111011221 is 122110111110101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101011111011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101011111011196 and 101011111011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101011111011241) 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, 32740055 + ... + 35692203.

It is an arithmetic number, because the mean of its divisors is an integer number (12702062293200).

Almost surely, 2^{101011111011221} is an apocalyptic number.

It is an amenable number.

101011111011221 is a deficient number, since it is larger than the sum of its proper divisors (605387334379).

101011111011221 is a wasteful number, since it uses less digits than its factorization.

101011111011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157203.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 101011111011221 its reverse (122110111110101), we get a palindrome (223121222121322).

The spelling of 101011111011221 in words is "one hundred one trillion, eleven billion, one hundred eleven million, eleven thousand, two hundred twenty-one".