1022221000001 has 2 divisors, whose sum is σ = 1022221000002. Its totient is φ = 1022221000000.

The previous prime is 1022220999973. The next prime is 1022221000007. The reversal of 1022221000001 is 1000001222201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016144641600 + 6076358401 = 1008040^2 + 77951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022221000001 - 2¹⁰ = 1022220998977 is a prime.

It is a super-5 number, since 5×1022221000001⁵ (a number of 61 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (1022221000007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511110500000 + 511110500001.

It is an arithmetic number, because the mean of its divisors is an integer number (511110500001).

Almost surely, 2^{1022221000001} is an apocalyptic number.

It is an amenable number.

1022221000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022221000001 is an equidigital number, since it uses as much as digits as its factorization.

1022221000001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1022221000001 its reverse (1000001222201), we get a palindrome (2022222222202).

The spelling of 1022221000001 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one", and thus it is an aban number.