2211321000120 has 64 divisors (see below), whose sum is σ = 6862720356000. Its totient is φ = 569351612928.

The previous prime is 2211321000037. The next prime is 2211321000173. The reversal of 2211321000120 is 210001231122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2211321000120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317715055 + ... + 317722014.

Almost surely, 2^{2211321000120} is an apocalyptic number.

2211321000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211321000120 is an abundant number, since it is smaller than the sum of its proper divisors (4651399355880).

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

2211321000120 is a wasteful number, since it uses less digits than its factorization.

2211321000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635437112 (or 635437108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2211321000120 its reverse (210001231122), we get a palindrome (2421322231242).

The spelling of 2211321000120 in words is "two trillion, two hundred eleven billion, three hundred twenty-one million, one hundred twenty", and thus it is an aban number.