221121010222153 has 2 divisors, whose sum is σ = 221121010222154. Its totient is φ = 221121010222152.

The previous prime is 221121010222093. The next prime is 221121010222181. The reversal of 221121010222153 is 351222010121122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146062404154384 + 75058606067769 = 12085628^2 + 8663637^2 .

It is a cyclic number.

It is not a de Polignac number, because 221121010222153 - 2⁴¹ = 218921986966601 is a prime.

It is not a weakly prime, because it can be changed into another prime (221121010232153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560505111076 + 110560505111077.

It is an arithmetic number, because the mean of its divisors is an integer number (110560505111077).

Almost surely, 2^{221121010222153} is an apocalyptic number.

It is an amenable number.

221121010222153 is a deficient number, since it is larger than the sum of its proper divisors (1).

221121010222153 is an equidigital number, since it uses as much as digits as its factorization.

221121010222153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 221121010222153 its reverse (351222010121122), we get a palindrome (572343020343275).

The spelling of 221121010222153 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, ten million, two hundred twenty-two thousand, one hundred fifty-three".