21122210011101 has 8 divisors (see below), whose sum is σ = 28252924148160. Its totient is φ = 14036484607392.

The previous prime is 21122210011073. The next prime is 21122210011129. The reversal of 21122210011101 is 10111001222112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21122210011073) and next prime (21122210011129).

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

It is not a de Polignac number, because 21122210011101 - 2¹⁸ = 21122209748957 is a prime.

It is a super-2 number, since 2×21122210011101² (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 (21122210011181) 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, 11247182241 + ... + 11247184118.

It is an arithmetic number, because the mean of its divisors is an integer number (3531615518520).

Almost surely, 2^{21122210011101} is an apocalyptic number.

It is an amenable number.

21122210011101 is a deficient number, since it is larger than the sum of its proper divisors (7130714137059).

21122210011101 is a wasteful number, since it uses less digits than its factorization.

21122210011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22494366675.

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

Adding to 21122210011101 its reverse (10111001222112), we get a palindrome (31233211233213).

The spelling of 21122210011101 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, eleven thousand, one hundred one".