1220222121001 has 8 divisors (see below), whose sum is σ = 1314520099200. Its totient is φ = 1125986248272.

The previous prime is 1220222120987. The next prime is 1220222121023. The reversal of 1220222121001 is 1001212220221.

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 1220222121001 - 2¹⁷ = 1220221989929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220222121071) 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, 15485551 + ... + 15564148.

It is an arithmetic number, because the mean of its divisors is an integer number (164315012400).

Almost surely, 2^{1220222121001} is an apocalyptic number.

It is an amenable number.

1220222121001 is a deficient number, since it is larger than the sum of its proper divisors (94297978199).

1220222121001 is a wasteful number, since it uses less digits than its factorization.

1220222121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31052735.

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

Adding to 1220222121001 its reverse (1001212220221), we get a palindrome (2221434341222).

The spelling of 1220222121001 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one".