2201021002120 has 16 divisors (see below), whose sum is σ = 4952297254860. Its totient is φ = 880408400832.

The previous prime is 2201021002099. The next prime is 2201021002241. The reversal of 2201021002120 is 212001201022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2199294932004 + 1726070116 = 1483002^2 + 41546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2201021002120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27512762487 + ... + 27512762566.

Almost surely, 2^{2201021002120} is an apocalyptic number.

2201021002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201021002120 is an abundant number, since it is smaller than the sum of its proper divisors (2751276252740).

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

2201021002120 is a wasteful number, since it uses less digits than its factorization.

2201021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55025525064 (or 55025525060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2201021002120 its reverse (212001201022), we get a palindrome (2413022203142).

The spelling of 2201021002120 in words is "two trillion, two hundred one billion, twenty-one million, two thousand, one hundred twenty".