12201201012100 has 72 divisors (see below), whose sum is σ = 26612765424000. Its totient is φ = 4855387680000.

The previous prime is 12201201012073. The next prime is 12201201012127. The reversal of 12201201012100 is 121010210221.

It is an interprime number because it is at equal distance from previous prime (12201201012073) and next prime (12201201012127).

It is a super-2 number, since 2×12201201012100² (a number of 27 digits) contains 22 as substring.

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, 197556225 + ... + 197617975.

It is an arithmetic number, because the mean of its divisors is an integer number (369621742000).

Almost surely, 2^{12201201012100} is an apocalyptic number.

12201201012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201201012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13306382712000).

12201201012100 is an abundant number, since it is smaller than the sum of its proper divisors (14411564411900).

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

12201201012100 is a wasteful number, since it uses less digits than its factorization.

12201201012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71893 (or 71886 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12201201012100 its reverse (121010210221), we get a palindrome (12322211222321).

The spelling of 12201201012100 in words is "twelve trillion, two hundred one billion, two hundred one million, twelve thousand, one hundred".