1001202012 has 96 divisors (see below), whose sum is σ = 2800526400. Its totient is φ = 308146176.

The previous prime is 1001201977. The next prime is 1001202019. The reversal of 1001202012 is 2102021001.

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 = 1001201985 and 1001202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001202019) 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, 92164 + ... + 102452.

It is an arithmetic number, because the mean of its divisors is an integer number (29172150).

Almost surely, 2^1001202012 is an apocalyptic number.

1001202012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001202012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400263200).

1001202012 is an abundant number, since it is smaller than the sum of its proper divisors (1799324388).

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

1001202012 is a wasteful number, since it uses less digits than its factorization.

1001202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10372 (or 10364 counting only the distinct ones).

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

The square root of 1001202012 is about 31641.7763723847. The cubic root of 1001202012 is about 1000.4005102368.

Adding to 1001202012 its reverse (2102021001), we get a palindrome (3103223013).

The spelling of 1001202012 in words is "one billion, one million, two hundred two thousand, twelve".