220201011220121 has 16 divisors (see below), whose sum is σ = 224414643737088. Its totient is φ = 215989567622400.

The previous prime is 220201011220103. The next prime is 220201011220129. The reversal of 220201011220121 is 121022110102022.

It is a de Polignac number, because none of the positive numbers 2^k-220201011220121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220201011220121.

It is not an unprimeable number, because it can be changed into a prime (220201011220129) 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, 4076939006 + ... + 4076993016.

It is an arithmetic number, because the mean of its divisors is an integer number (14025915233568).

Almost surely, 2^{220201011220121} is an apocalyptic number.

It is an amenable number.

220201011220121 is a deficient number, since it is larger than the sum of its proper divisors (4213632516967).

220201011220121 is a wasteful number, since it uses less digits than its factorization.

220201011220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72832.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220201011220121 its reverse (121022110102022), we get a palindrome (341223121322143).

The spelling of 220201011220121 in words is "two hundred twenty trillion, two hundred one billion, eleven million, two hundred twenty thousand, one hundred twenty-one".