21122122122110 has 16 divisors (see below), whose sum is σ = 38019947216400. Its totient is φ = 8448820538496.

The previous prime is 21122122122091. The next prime is 21122122122121. The reversal of 21122122122110 is 1122122122112.

It is a super-2 number, since 2×21122122122110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260600 + ... + 6504779.

It is an arithmetic number, because the mean of its divisors is an integer number (2376246701025).

Almost surely, 2^{21122122122110} is an apocalyptic number.

21122122122110 is a deficient number, since it is larger than the sum of its proper divisors (16897825094290).

21122122122110 is a wasteful number, since it uses less digits than its factorization.

21122122122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077595.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21122122122110 its reverse (1122122122112), we get a palindrome (22244244244222).

The spelling of 21122122122110 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred ten".