2002155105 has 8 divisors (see below), whose sum is σ = 3203448192. Its totient is φ = 1067816048.

The previous prime is 2002155101. The next prime is 2002155107. The reversal of 2002155105 is 5015512002.

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

It is a cyclic number.

It is not a de Polignac number, because 2002155105 - 2² = 2002155101 is a prime.

It is a super-2 number, since 2×2002155105² = 8017250128955122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2002155101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66738489 + ... + 66738518.

It is an arithmetic number, because the mean of its divisors is an integer number (400431024).

Almost surely, 2^2002155105 is an apocalyptic number.

It is an amenable number.

2002155105 is a deficient number, since it is larger than the sum of its proper divisors (1201293087).

2002155105 is a wasteful number, since it uses less digits than its factorization.

2002155105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133477015.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2002155105 is about 44745.4478690291. The cubic root of 2002155105 is about 1260.3734311380.

Adding to 2002155105 its reverse (5015512002), we get a palindrome (7017667107).

The spelling of 2002155105 in words is "two billion, two million, one hundred fifty-five thousand, one hundred five".