21101220111301 has 8 divisors (see below), whose sum is σ = 23020716964608. Its totient is φ = 19181923944000.

The previous prime is 21101220111281. The next prime is 21101220111347. The reversal of 21101220111301 is 10311102210112.

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 21101220111301 - 2¹⁹ = 21101219587013 is a prime.

It is a super-2 number, since 2×21101220111301² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101220111371) 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, 49951605 + ... + 50372266.

It is an arithmetic number, because the mean of its divisors is an integer number (2877589620576).

Almost surely, 2^{21101220111301} is an apocalyptic number.

It is an amenable number.

21101220111301 is a deficient number, since it is larger than the sum of its proper divisors (1919496853307).

21101220111301 is a wasteful number, since it uses less digits than its factorization.

21101220111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100343003.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21101220111301 its reverse (10311102210112), we get a palindrome (31412322321413).

The spelling of 21101220111301 in words is "twenty-one trillion, one hundred one billion, two hundred twenty million, one hundred eleven thousand, three hundred one".