1212002115 has 32 divisors (see below), whose sum is σ = 2051723520. Its totient is φ = 609243264.

The previous prime is 1212002111. The next prime is 1212002117. The reversal of 1212002115 is 5112002121.

It is not a de Polignac number, because 1212002115 - 2² = 1212002111 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 = 1212002094 and 1212002103.

It is not an unprimeable number, because it can be changed into a prime (1212002111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45352 + ... + 66938.

It is an arithmetic number, because the mean of its divisors is an integer number (64116360).

Almost surely, 2^1212002115 is an apocalyptic number.

1212002115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1212002115 is a deficient number, since it is larger than the sum of its proper divisors (839721405).

1212002115 is a wasteful number, since it uses less digits than its factorization.

1212002115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21811.

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

The square root of 1212002115 is about 34813.8207469390. The cubic root of 1212002115 is about 1066.1896424417.

Adding to 1212002115 its reverse (5112002121), we get a palindrome (6324004236).

The spelling of 1212002115 in words is "one billion, two hundred twelve million, two thousand, one hundred fifteen".