12021011210100 has 72 divisors (see below), whose sum is σ = 35118470121280. Its totient is φ = 3174480622080.

The previous prime is 12021011210069. The next prime is 12021011210111. The reversal of 12021011210100 is 101211012021.

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 23 ways as a sum of consecutive naturals, for example, 194483845 + ... + 194545644.

Almost surely, 2^{12021011210100} is an apocalyptic number.

12021011210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021011210100 is an abundant number, since it is smaller than the sum of its proper divisors (23097458911180).

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

12021011210100 is a wasteful number, since it uses less digits than its factorization.

12021011210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389029609 (or 389029602 counting only the distinct ones).

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

Adding to 12021011210100 its reverse (101211012021), we get a palindrome (12122222222121).

The spelling of 12021011210100 in words is "twelve trillion, twenty-one billion, eleven million, two hundred ten thousand, one hundred".