1212012115 has 16 divisors (see below), whose sum is σ = 1506804480. Its totient is φ = 934911360.

The previous prime is 1212012107. The next prime is 1212012119. The reversal of 1212012115 is 5112102121.

It is not a de Polignac number, because 1212012115 - 2³ = 1212012107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212012119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28821 + ... + 57049.

It is an arithmetic number, because the mean of its divisors is an integer number (94175280).

Almost surely, 2^1212012115 is an apocalyptic number.

1212012115 is a deficient number, since it is larger than the sum of its proper divisors (294792365).

1212012115 is a wasteful number, since it uses less digits than its factorization.

1212012115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28542.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1212012115 is about 34813.9643677648. The cubic root of 1212012115 is about 1066.1925747433.

Adding to 1212012115 its reverse (5112102121), we get a palindrome (6324114236).

The spelling of 1212012115 in words is "one billion, two hundred twelve million, twelve thousand, one hundred fifteen".