2210121221057 has 2 divisors, whose sum is σ = 2210121221058. Its totient is φ = 2210121221056.

The previous prime is 2210121220987. The next prime is 2210121221137. The reversal of 2210121221057 is 7501221210122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1312562040241 + 897559180816 = 1145671^2 + 947396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210121221057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2210121221257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105060610528 + 1105060610529.

It is an arithmetic number, because the mean of its divisors is an integer number (1105060610529).

Almost surely, 2^{2210121221057} is an apocalyptic number.

It is an amenable number.

2210121221057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210121221057 is an equidigital number, since it uses as much as digits as its factorization.

2210121221057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 2210121221057 its reverse (7501221210122), we get a palindrome (9711342431179).

The spelling of 2210121221057 in words is "two trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, fifty-seven".