1221202210201 has 8 divisors (see below), whose sum is σ = 1255971655008. Its totient is φ = 1186670100000.

The previous prime is 1221202210199. The next prime is 1221202210213. The reversal of 1221202210201 is 1020122021221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221202210201 - 2¹ = 1221202210199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221202217201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59323215 + ... + 59343796.

It is an arithmetic number, because the mean of its divisors is an integer number (156996456876).

Almost surely, 2^{1221202210201} is an apocalyptic number.

It is an amenable number.

1221202210201 is a deficient number, since it is larger than the sum of its proper divisors (34769444807).

1221202210201 is a wasteful number, since it uses less digits than its factorization.

1221202210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118667303.

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

Adding to 1221202210201 its reverse (1020122021221), we get a palindrome (2241324231422).

The spelling of 1221202210201 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred ten thousand, two hundred one".