21122001121101 has 8 divisors (see below), whose sum is σ = 28180849360800. Its totient is φ = 14072243481072.

The previous prime is 21122001121097. The next prime is 21122001121141. The reversal of 21122001121101 is 10112110022112.

It is a happy number.

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

It is not a de Polignac number, because 21122001121101 - 2² = 21122001121097 is a prime.

It is a super-2 number, since 2×21122001121101² (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 (21122001121141) 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, 2272644495 + ... + 2272653788.

It is an arithmetic number, because the mean of its divisors is an integer number (3522606170100).

Almost surely, 2^{21122001121101} is an apocalyptic number.

It is an amenable number.

21122001121101 is a deficient number, since it is larger than the sum of its proper divisors (7058848239699).

21122001121101 is a wasteful number, since it uses less digits than its factorization.

21122001121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545299835.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21122001121101 its reverse (10112110022112), we get a palindrome (31234111143213).

The spelling of 21122001121101 in words is "twenty-one trillion, one hundred twenty-two billion, one million, one hundred twenty-one thousand, one hundred one".