2221109999957 has 2 divisors, whose sum is σ = 2221109999958. Its totient is φ = 2221109999956.

The previous prime is 2221109999951. The next prime is 2221110000013. The reversal of 2221109999957 is 7599999011222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2183284028836 + 37825971121 = 1477594^2 + 194489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221109999957 - 2⁶ = 2221109999893 is a prime.

It is a super-3 number, since 3×2221109999957³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221109999893 and 2221109999902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221109999951) 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 as a sum of consecutive naturals, namely, 1110554999978 + 1110554999979.

It is an arithmetic number, because the mean of its divisors is an integer number (1110554999979).

Almost surely, 2^{2221109999957} is an apocalyptic number.

It is an amenable number.

2221109999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221109999957 is an equidigital number, since it uses as much as digits as its factorization.

2221109999957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16533720, while the sum is 65.

The spelling of 2221109999957 in words is "two trillion, two hundred twenty-one billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred fifty-seven".