1220121037 has 2 divisors, whose sum is σ = 1220121038. Its totient is φ = 1220121036.

The previous prime is 1220121017. The next prime is 1220121061. The reversal of 1220121037 is 7301210221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210065796 + 10055241 = 34786^2 + 3171^2 .

It is an emirp because it is prime and its reverse (7301210221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220121037 - 2¹⁵ = 1220088269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220121017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610060518 + 610060519.

It is an arithmetic number, because the mean of its divisors is an integer number (610060519).

Almost surely, 2^1220121037 is an apocalyptic number.

It is an amenable number.

1220121037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220121037 is an equidigital number, since it uses as much as digits as its factorization.

1220121037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1220121037 is about 34930.2309897888. The cubic root of 1220121037 is about 1068.5650654921.

Adding to 1220121037 its reverse (7301210221), we get a palindrome (8521331258).

The spelling of 1220121037 in words is "one billion, two hundred twenty million, one hundred twenty-one thousand, thirty-seven".