121202115 has 16 divisors (see below), whose sum is σ = 194421408. Its totient is φ = 64475136.

The previous prime is 121202101. The next prime is 121202131. The reversal of 121202115 is 511202121.

It is not a de Polignac number, because 121202115 - 2⁴ = 121202099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 121202094 and 121202103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4222 + ... + 16131.

It is an arithmetic number, because the mean of its divisors is an integer number (12151338).

Almost surely, 2^121202115 is an apocalyptic number.

121202115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121202115 is a deficient number, since it is larger than the sum of its proper divisors (73219293).

121202115 is a wasteful number, since it uses less digits than its factorization.

121202115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20758.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121202115 is about 11009.1832122097. The cubic root of 121202115 is about 494.8839846466.

Adding to 121202115 its reverse (511202121), we get a palindrome (632404236).

The spelling of 121202115 in words is "one hundred twenty-one million, two hundred two thousand, one hundred fifteen".