2101151278 has 32 divisors (see below), whose sum is σ = 3378827520. Its totient is φ = 976473600.

The previous prime is 2101151243. The next prime is 2101151279. The reversal of 2101151278 is 8721511012.

It is a super-3 number, since 3×2101151278³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101151279) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2434275 + ... + 2435137.

It is an arithmetic number, because the mean of its divisors is an integer number (105588360).

Almost surely, 2^2101151278 is an apocalyptic number.

2101151278 is a deficient number, since it is larger than the sum of its proper divisors (1277676242).

2101151278 is a wasteful number, since it uses less digits than its factorization.

2101151278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 1120, while the sum is 28.

The square root of 2101151278 is about 45838.3167012053. The cubic root of 2101151278 is about 1280.8131385247.

It can be divided in two parts, 2101 and 151278, that multiplied together give a triangular number (317835078 = T₂₅₂₁₂).

The spelling of 2101151278 in words is "two billion, one hundred one million, one hundred fifty-one thousand, two hundred seventy-eight".