1212220120201 has 16 divisors (see below), whose sum is σ = 1224174772800. Its totient is φ = 1200315168000.

The previous prime is 1212220120193. The next prime is 1212220120211. The reversal of 1212220120201 is 1020210222121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1212220120201 - 2³ = 1212220120193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212220120211) 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, 114344301 + ... + 114354901.

It is an arithmetic number, because the mean of its divisors is an integer number (76510923300).

Almost surely, 2^{1212220120201} is an apocalyptic number.

It is an amenable number.

1212220120201 is a deficient number, since it is larger than the sum of its proper divisors (11954652599).

1212220120201 is a wasteful number, since it uses less digits than its factorization.

1212220120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12840.

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

Adding to 1212220120201 its reverse (1020210222121), we get a palindrome (2232430342322).

The spelling of 1212220120201 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty thousand, two hundred one".