2102221210122 has 48 divisors (see below), whose sum is σ = 5004633947040. Its totient is φ = 632453724000.

The previous prime is 2102221210081. The next prime is 2102221210139. The reversal of 2102221210122 is 2210121222012.

It is a happy number.

2102221210122 is a `hidden beast` number, since 210 + 2 + 221 + 210 + 1 + 22 = 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 = 2102221210095 and 2102221210104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38164129 + ... + 38219172.

It is an arithmetic number, because the mean of its divisors is an integer number (104263207230).

Almost surely, 2^{2102221210122} is an apocalyptic number.

2102221210122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2102221210122 is an abundant number, since it is smaller than the sum of its proper divisors (2902412736918).

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

2102221210122 is a wasteful number, since it uses less digits than its factorization.

2102221210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76383459 (or 76383456 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2102221210122 its reverse (2210121222012), we get a palindrome (4312342432134).

The spelling of 2102221210122 in words is "two trillion, one hundred two billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-two".