1222100220121 has 8 divisors (see below), whose sum is σ = 1361566203264. Its totient is φ = 1087361897520.

The previous prime is 1222100220119. The next prime is 1222100220167. The reversal of 1222100220121 is 1210220012221.

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 1222100220121 - 2¹ = 1222100220119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222100220095 and 1222100220104.

It is not an unprimeable number, because it can be changed into a prime (1222100220191) 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, 1181914590 + ... + 1181915623.

It is an arithmetic number, because the mean of its divisors is an integer number (170195775408).

Almost surely, 2^{1222100220121} is an apocalyptic number.

1222100220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222100220121 is a deficient number, since it is larger than the sum of its proper divisors (139465983143).

1222100220121 is a wasteful number, since it uses less digits than its factorization.

1222100220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363830271.

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

Adding to 1222100220121 its reverse (1210220012221), we get a palindrome (2432320232342).

The spelling of 1222100220121 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".