1201512012 has 48 divisors (see below), whose sum is σ = 2897664000. Its totient is φ = 387089280.

The previous prime is 1201512001. The next prime is 1201512017. The reversal of 1201512012 is 2102151021.

It is a super-2 number, since 2×1201512012² = 2887262229960576288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201511982 and 1201512000.

It is not an unprimeable number, because it can be changed into a prime (1201512017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388689 + ... + 391767.

It is an arithmetic number, because the mean of its divisors is an integer number (60368000).

Almost surely, 2^1201512012 is an apocalyptic number.

1201512012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201512012 is an abundant number, since it is smaller than the sum of its proper divisors (1696151988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201512012 is a wasteful number, since it uses less digits than its factorization.

1201512012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166 (or 4164 counting only the distinct ones).

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

The square root of 1201512012 is about 34662.8332944669. The cubic root of 1201512012 is about 1063.1047019990.

Adding to 1201512012 its reverse (2102151021), we get a palindrome (3303663033).

The spelling of 1201512012 in words is "one billion, two hundred one million, five hundred twelve thousand, twelve".