1220101021201 has 16 divisors (see below), whose sum is σ = 1292747673600. Its totient is φ = 1149103687248.

The previous prime is 1220101021177. The next prime is 1220101021241. The reversal of 1220101021201 is 1021201010221.

It is a cyclic number.

It is not a de Polignac number, because 1220101021201 - 2²³ = 1220092632593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220101021241) 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, 3176160 + ... + 3539518.

It is an arithmetic number, because the mean of its divisors is an integer number (80796729600).

Almost surely, 2^{1220101021201} is an apocalyptic number.

It is an amenable number.

1220101021201 is a deficient number, since it is larger than the sum of its proper divisors (72646652399).

1220101021201 is a wasteful number, since it uses less digits than its factorization.

1220101021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365628.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220101021201 its reverse (1021201010221), we get a palindrome (2241302031422).

The spelling of 1220101021201 in words is "one trillion, two hundred twenty billion, one hundred one million, twenty-one thousand, two hundred one".