12011022012 has 48 divisors (see below), whose sum is σ = 30733645824. Its totient is φ = 3620640000.

The previous prime is 12011021977. The next prime is 12011022031. The reversal of 12011022012 is 21022011021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212989 + ... + 263412.

It is an arithmetic number, because the mean of its divisors is an integer number (640284288).

Almost surely, 2^12011022012 is an apocalyptic number.

12011022012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011022012 is an abundant number, since it is smaller than the sum of its proper divisors (18722623812).

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

12011022012 is a wasteful number, since it uses less digits than its factorization.

12011022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476610 (or 476608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12011022012 its reverse (21022011021), we get a palindrome (33033033033).

The spelling of 12011022012 in words is "twelve billion, eleven million, twenty-two thousand, twelve".