12021101999984 has 40 divisors (see below), whose sum is σ = 29037986652288. Its totient is φ = 4683546233280.

The previous prime is 12021101999983. The next prime is 12021102000029. The reversal of 12021101999984 is 48999910112021.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021101999983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878692762 + ... + 4878695225.

Almost surely, 2^{12021101999984} is an apocalyptic number.

12021101999984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12021101999984 is an abundant number, since it is smaller than the sum of its proper divisors (17016884652304).

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

12021101999984 is a wasteful number, since it uses less digits than its factorization.

12021101999984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757388013 (or 9757388007 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 56.

The spelling of 12021101999984 in words is "twelve trillion, twenty-one billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred eighty-four".