121638035 has 12 divisors (see below), whose sum is σ = 151177728. Its totient is φ = 93951648.

The previous prime is 121638029. The next prime is 121638047. The reversal of 121638035 is 530836121.

It is not a de Polignac number, because 121638035 - 2¹⁶ = 121572499 is a prime.

It is a super-2 number, since 2×121638035² = 29591623117322450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121637989 and 121638007.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10259 + ... + 18668.

It is an arithmetic number, because the mean of its divisors is an integer number (12598144).

Almost surely, 2^121638035 is an apocalyptic number.

121638035 is a deficient number, since it is larger than the sum of its proper divisors (29539693).

121638035 is an equidigital number, since it uses as much as digits as its factorization.

121638035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28990 (or 28961 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 121638035 is about 11028.9634599086. The cubic root of 121638035 is about 495.4765807637.

The spelling of 121638035 in words is "one hundred twenty-one million, six hundred thirty-eight thousand, thirty-five".