1001012011212 has 36 divisors (see below), whose sum is σ = 2359049638568. Its totient is φ = 330366960000.

The previous prime is 1001012011199. The next prime is 1001012011213. The reversal of 1001012011212 is 2121102101001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1001012011213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3966289 + ... + 4211112.

Almost surely, 2^{1001012011212} is an apocalyptic number.

1001012011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001012011212 is an abundant number, since it is smaller than the sum of its proper divisors (1358037627356).

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

1001012011212 is a wasteful number, since it uses less digits than its factorization.

1001012011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8177610 (or 8177507 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001012011212 its reverse (2121102101001), we get a palindrome (3122114112213).

The spelling of 1001012011212 in words is "one trillion, one billion, twelve million, eleven thousand, two hundred twelve".