2001102122 has 8 divisors (see below), whose sum is σ = 3001849956. Its totient is φ = 1000485472.

The previous prime is 2001102121. The next prime is 2001102157. The reversal of 2001102122 is 2212011002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1959744361 + 41357761 = 44269^2 + 6431^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2001102121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27548 + ... + 69000.

Almost surely, 2^2001102122 is an apocalyptic number.

2001102122 is a deficient number, since it is larger than the sum of its proper divisors (1000747834).

2001102122 is a wasteful number, since it uses less digits than its factorization.

2001102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65592.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001102122 is about 44733.6799514639. The cubic root of 2001102122 is about 1260.1524385149.

Adding to 2001102122 its reverse (2212011002), we get a palindrome (4213113124).

The spelling of 2001102122 in words is "two billion, one million, one hundred two thousand, one hundred twenty-two".