1220022202237 has 2 divisors, whose sum is σ = 1220022202238. Its totient is φ = 1220022202236.

The previous prime is 1220022202199. The next prime is 1220022202261. The reversal of 1220022202237 is 7322022200221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1125411209316 + 94610992921 = 1060854^2 + 307589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220022202237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220022202537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011101118 + 610011101119.

It is an arithmetic number, because the mean of its divisors is an integer number (610011101119).

Almost surely, 2^{1220022202237} is an apocalyptic number.

It is an amenable number.

1220022202237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220022202237 is an equidigital number, since it uses as much as digits as its factorization.

1220022202237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

Adding to 1220022202237 its reverse (7322022200221), we get a palindrome (8542044402458).

The spelling of 1220022202237 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred two thousand, two hundred thirty-seven".