1222122201001 has 16 divisors (see below), whose sum is σ = 1349190072720. Its totient is φ = 1099816058880.

The previous prime is 1222122200993. The next prime is 1222122201023. The reversal of 1222122201001 is 1001022212221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 769699155625 + 452423045376 = 877325^2 + 672624^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222122201001 - 2³ = 1222122200993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222122201901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62670 + ... + 1564663.

It is an arithmetic number, because the mean of its divisors is an integer number (84324379545).

Almost surely, 2^{1222122201001} is an apocalyptic number.

It is an amenable number.

1222122201001 is a deficient number, since it is larger than the sum of its proper divisors (127067871719).

1222122201001 is a wasteful number, since it uses less digits than its factorization.

1222122201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628796.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222122201001 its reverse (1001022212221), we get a palindrome (2223144413222).

The spelling of 1222122201001 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred one thousand, one".