1200102012 has 72 divisors (see below), whose sum is σ = 3322846800. Its totient is φ = 363514368.

The previous prime is 1200101963. The next prime is 1200102023. The reversal of 1200102012 is 2102010021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200101985 and 1200102003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16062 + ... + 51557.

It is an arithmetic number, because the mean of its divisors is an integer number (46150650).

Almost surely, 2^1200102012 is an apocalyptic number.

1200102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200102012 is an abundant number, since it is smaller than the sum of its proper divisors (2122744788).

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

1200102012 is a wasteful number, since it uses less digits than its factorization.

1200102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67675 (or 67670 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1200102012 is about 34642.4885364779. The cubic root of 1200102012 is about 1062.6886805310.

Adding to 1200102012 its reverse (2102010021), we get a palindrome (3302112033).

The spelling of 1200102012 in words is "one billion, two hundred million, one hundred two thousand, twelve".