1221202222069 has 2 divisors, whose sum is σ = 1221202222070. Its totient is φ = 1221202222068.

The previous prime is 1221202222063. The next prime is 1221202222129. The reversal of 1221202222069 is 9602222021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734748980625 + 486453241444 = 857175^2 + 697462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221202222069 - 2¹⁵ = 1221202189301 is a prime.

It is a super-2 number, since 2×1221202222069² (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 1221202222069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221202222063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610601111034 + 610601111035.

It is an arithmetic number, because the mean of its divisors is an integer number (610601111035).

Almost surely, 2^{1221202222069} is an apocalyptic number.

It is an amenable number.

1221202222069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221202222069 is an equidigital number, since it uses as much as digits as its factorization.

1221202222069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 1221202222069 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, sixty-nine".