12002101001220 has 96 divisors (see below), whose sum is σ = 38590487470080. Its totient is φ = 2756463384960.

The previous prime is 12002101001171. The next prime is 12002101001227. The reversal of 12002101001220 is 2210010120021.

It is a super-2 number, since 2×12002101001220² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 12002101001196 and 12002101001205.

It is not an unprimeable number, because it can be changed into a prime (12002101001227) 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, 478540132 + ... + 478565211.

It is an arithmetic number, because the mean of its divisors is an integer number (401984244480).

Almost surely, 2^{12002101001220} is an apocalyptic number.

12002101001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002101001220 is an abundant number, since it is smaller than the sum of its proper divisors (26588386468860).

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

12002101001220 is a wasteful number, since it uses less digits than its factorization.

12002101001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957105385 (or 957105383 counting only the distinct ones).

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

Adding to 12002101001220 its reverse (2210010120021), we get a palindrome (14212111121241).

The spelling of 12002101001220 in words is "twelve trillion, two billion, one hundred one million, one thousand, two hundred twenty".