1220002201001 has 16 divisors (see below), whose sum is σ = 1295312606784. Its totient is φ = 1145088282624.

The previous prime is 1220002200971. The next prime is 1220002201027. The reversal of 1220002201001 is 1001022000221.

It is a happy number.

It is not a de Polignac number, because 1220002201001 - 2¹⁴ = 1220002184617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220002201091) 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, 15874670 + ... + 15951336.

It is an arithmetic number, because the mean of its divisors is an integer number (80957037924).

Almost surely, 2^{1220002201001} is an apocalyptic number.

It is an amenable number.

1220002201001 is a deficient number, since it is larger than the sum of its proper divisors (75310405783).

1220002201001 is a wasteful number, since it uses less digits than its factorization.

1220002201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79240.

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

Adding to 1220002201001 its reverse (1001022000221), we get a palindrome (2221024201222).

The spelling of 1220002201001 in words is "one trillion, two hundred twenty billion, two million, two hundred one thousand, one".