2220121199969 has 2 divisors, whose sum is σ = 2220121199970. Its totient is φ = 2220121199968.

The previous prime is 2220121199953. The next prime is 2220121200007. The reversal of 2220121199969 is 9699911210222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1623076000000 + 597045199969 = 1274000^2 + 772687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220121199969 - 2⁴ = 2220121199953 is a prime.

It is a super-2 number, since 2×2220121199969² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2220121199969.

It is not a weakly prime, because it can be changed into another prime (2220121199069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110060599984 + 1110060599985.

It is an arithmetic number, because the mean of its divisors is an integer number (1110060599985).

Almost surely, 2^{2220121199969} is an apocalyptic number.

It is an amenable number.

2220121199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220121199969 is an equidigital number, since it uses as much as digits as its factorization.

2220121199969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 2220121199969 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred sixty-nine".