102001122 has 24 divisors (see below), whose sum is σ = 234003276. Its totient is φ = 32000256.

The previous prime is 102001121. The next prime is 102001127. The reversal of 102001122 is 221100201.

It can be written as a sum of positive squares in 2 ways, for example, as 101425041 + 576081 = 10071^2 + 759^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

102001122 is a modest number, since divided by 1122 gives 102 as remainder.

It is not an unprimeable number, because it can be changed into a prime (102001121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166363 + ... + 166974.

Almost surely, 2^102001122 is an apocalyptic number.

102001122 is an abundant number, since it is smaller than the sum of its proper divisors (132002154).

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

102001122 is a wasteful number, since it uses less digits than its factorization.

102001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333362 (or 333359 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 102001122 is about 10099.5604854865. The cubic root of 102001122 is about 467.2345860164.

Adding to 102001122 its reverse (221100201), we get a palindrome (323101323).

The spelling of 102001122 in words is "one hundred two million, one thousand, one hundred twenty-two".