1222201212001 has 32 divisors (see below), whose sum is σ = 1604326579200. Its totient is φ = 902046559680.

The previous prime is 1222201211971. The next prime is 1222201212083. The reversal of 1222201212001 is 1002121022221.

It is a happy number.

It is not a de Polignac number, because 1222201212001 - 2²¹ = 1222199114849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222201212091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6919086 + ... + 7093528.

It is an arithmetic number, because the mean of its divisors is an integer number (50135205600).

Almost surely, 2^{1222201212001} is an apocalyptic number.

1222201212001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222201212001 is a deficient number, since it is larger than the sum of its proper divisors (382125367199).

1222201212001 is a wasteful number, since it uses less digits than its factorization.

1222201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179269.

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

Adding to 1222201212001 its reverse (1002121022221), we get a palindrome (2224322234222).

The spelling of 1222201212001 in words is "one trillion, two hundred twenty-two billion, two hundred one million, two hundred twelve thousand, one".