2220100120121 has 8 divisors (see below), whose sum is σ = 2531516879304. Its totient is φ = 1928774764800.

The previous prime is 2220100120111. The next prime is 2220100120123. The reversal of 2220100120121 is 1210210010222.

It can be written as a sum of positive squares in 4 ways, for example, as 71896914496 + 2148203205625 = 268136^2 + 1465675^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-2220100120121 is a prime.

It is a super-2 number, since 2×2220100120121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2220100120096 and 2220100120105.

It is not an unprimeable number, because it can be changed into a prime (2220100120123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5022850730 + ... + 5022851171.

It is an arithmetic number, because the mean of its divisors is an integer number (316439609913).

Almost surely, 2^{2220100120121} is an apocalyptic number.

It is an amenable number.

2220100120121 is a deficient number, since it is larger than the sum of its proper divisors (311416759183).

2220100120121 is a wasteful number, since it uses less digits than its factorization.

2220100120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045701931.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2220100120121 its reverse (1210210010222), we get a palindrome (3430310130343).

The spelling of 2220100120121 in words is "two trillion, two hundred twenty billion, one hundred million, one hundred twenty thousand, one hundred twenty-one".