1022202143221 has 6 divisors (see below), whose sum is σ = 1189092289110. Its totient is φ = 876173265576.

The previous prime is 1022202143191. The next prime is 1022202143239. The reversal of 1022202143221 is 1223412022201.

It can be written as a sum of positive squares in only one way, i.e., 705576480196 + 316625663025 = 839986^2 + 562695^2 .

It is not a de Polignac number, because 1022202143221 - 2³⁵ = 987842404853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022202143192 and 1022202143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022202123221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10430634066 + ... + 10430634163.

It is an arithmetic number, because the mean of its divisors is an integer number (198182048185).

Almost surely, 2^{1022202143221} is an apocalyptic number.

It is an amenable number.

1022202143221 is a deficient number, since it is larger than the sum of its proper divisors (166890145889).

1022202143221 is an equidigital number, since it uses as much as digits as its factorization.

1022202143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20861268243 (or 20861268236 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1022202143221 its reverse (1223412022201), we get a palindrome (2245614165422).

The spelling of 1022202143221 in words is "one trillion, twenty-two billion, two hundred two million, one hundred forty-three thousand, two hundred twenty-one".