7121100115 has 8 divisors (see below), whose sum is σ = 8545786128. Its totient is φ = 5696569440.

The previous prime is 7121100089. The next prime is 7121100137. The reversal of 7121100115 is 5110011217.

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

It is not a de Polignac number, because 7121100115 - 2⁵ = 7121100083 is a prime.

It is a super-3 number, since 3×7121100115³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7121100092 and 7121100101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124425 + ... + 172405.

It is an arithmetic number, because the mean of its divisors is an integer number (1068223266).

Almost surely, 2^7121100115 is an apocalyptic number.

7121100115 is a deficient number, since it is larger than the sum of its proper divisors (1424686013).

7121100115 is a wasteful number, since it uses less digits than its factorization.

7121100115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77669.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 7121100115 is about 84386.6109936879. The cubic root of 7121100115 is about 1923.8994205853.

The spelling of 7121100115 in words is "seven billion, one hundred twenty-one million, one hundred thousand, one hundred fifteen".