221210210101122 has 80 divisors (see below), whose sum is σ = 572544073281312. Its totient is φ = 63090255991680.

The previous prime is 221210210101061. The next prime is 221210210101159. The reversal of 221210210101122 is 221101012012122.

221210210101122 is a `hidden beast` number, since 2 + 21 + 210 + 210 + 101 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221210210101095 and 221210210101104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3651026188 + ... + 3651086775.

Almost surely, 2^{221210210101122} is an apocalyptic number.

221210210101122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221210210101122 is an abundant number, since it is smaller than the sum of its proper divisors (351333863180190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221210210101122 is a wasteful number, since it uses less digits than its factorization.

221210210101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302113005 (or 7302112996 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221210210101122 its reverse (221101012012122), we get a palindrome (442311222113244).

The spelling of 221210210101122 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred ten million, one hundred one thousand, one hundred twenty-two".