1020000021222 has 128 divisors (see below), whose sum is σ = 2552817254400. Its totient is φ = 264525770880.

The previous prime is 1020000021169. The next prime is 1020000021247. The reversal of 1020000021222 is 2221200000201.

It is a super-3 number, since 3×1020000021222³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020000021198 and 1020000021207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14813029 + ... + 14881727.

It is an arithmetic number, because the mean of its divisors is an integer number (19943884800).

Almost surely, 2^{1020000021222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020000021222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276408627200).

1020000021222 is an abundant number, since it is smaller than the sum of its proper divisors (1532817233178).

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

1020000021222 is a wasteful number, since it uses less digits than its factorization.

1020000021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69178.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1020000021222 its reverse (2221200000201), we get a palindrome (3241200021423).

The spelling of 1020000021222 in words is "one trillion, twenty billion, twenty-one thousand, two hundred twenty-two".