3155121002 has 16 divisors (see below), whose sum is σ = 5387401152. Its totient is φ = 1371791520.

The previous prime is 3155120987. The next prime is 3155121031. The reversal of 3155121002 is 2001215513.

It is a happy number.

It is a super-2 number, since 2×3155121002² = 19909577074522968008, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3117203 + ... + 3118214.

It is an arithmetic number, because the mean of its divisors is an integer number (336712572).

Almost surely, 2^3155121002 is an apocalyptic number.

3155121002 is a deficient number, since it is larger than the sum of its proper divisors (2232280150).

3155121002 is a wasteful number, since it uses less digits than its factorization.

3155121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235453.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 3155121002 is about 56170.4637865845. The cubic root of 3155121002 is about 1466.6911557780.

Adding to 3155121002 its reverse (2001215513), we get a palindrome (5156336515).

The spelling of 3155121002 in words is "three billion, one hundred fifty-five million, one hundred twenty-one thousand, two".