1222021002120 has 384 divisors, whose sum is σ = 4007861907840. Its totient is φ = 296943329280.

The previous prime is 1222021002089. The next prime is 1222021002151. The reversal of 1222021002120 is 212001202221.

It is an interprime number because it is at equal distance from previous prime (1222021002089) and next prime (1222021002151).

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 1222021002120.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 674776015 + ... + 674777825.

It is an arithmetic number, because the mean of its divisors is an integer number (10437140385).

Almost surely, 2^{1222021002120} is an apocalyptic number.

1222021002120 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 1222021002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2003930953920).

1222021002120 is an abundant number, since it is smaller than the sum of its proper divisors (2785840905720).

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

1222021002120 is a wasteful number, since it uses less digits than its factorization.

1222021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222021002120 its reverse (212001202221), we get a palindrome (1434022204341).

The spelling of 1222021002120 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two thousand, one hundred twenty".