1022220321000 has 128 divisors (see below), whose sum is σ = 3210450197760. Its totient is φ = 270786720000.

The previous prime is 1022220320993. The next prime is 1022220321011. The reversal of 1022220321000 is 1230222201.

It is a happy number.

It is a super-3 number, since 3×1022220321000³ (a number of 37 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675279 + ... + 1581278.

It is an arithmetic number, because the mean of its divisors is an integer number (25081642170).

Almost surely, 2^{1022220321000} is an apocalyptic number.

1022220321000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022220321000 is an abundant number, since it is smaller than the sum of its proper divisors (2188229876760).

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

1022220321000 is a wasteful number, since it uses less digits than its factorization.

1022220321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256732 (or 2256718 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1022220321000 its reverse (1230222201), we get a palindrome (1023450543201).

The spelling of 1022220321000 in words is "one trillion, twenty-two billion, two hundred twenty million, three hundred twenty-one thousand".