2220666520121 has 8 divisors (see below), whose sum is σ = 2537914056000. Its totient is φ = 1903421349648.

The previous prime is 2220666520027. The next prime is 2220666520123. The reversal of 2220666520121 is 1210256660222.

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-2220666520121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220666520123) 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, 2492630 + ... + 3264128.

It is an arithmetic number, because the mean of its divisors is an integer number (317239257000).

Almost surely, 2^{2220666520121} is an apocalyptic number.

It is an amenable number.

2220666520121 is a deficient number, since it is larger than the sum of its proper divisors (317247535879).

2220666520121 is an equidigital number, since it uses as much as digits as its factorization.

2220666520121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182703.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 2220666520121 in words is "two trillion, two hundred twenty billion, six hundred sixty-six million, five hundred twenty thousand, one hundred twenty-one".