1122420312157 has 2 divisors, whose sum is σ = 1122420312158. Its totient is φ = 1122420312156.

The previous prime is 1122420312067. The next prime is 1122420312217. The reversal of 1122420312157 is 7512130242211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106512544281 + 15907767876 = 1051909^2 + 126126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122420312157 - 2¹⁹ = 1122419787869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122420312557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561210156078 + 561210156079.

It is an arithmetic number, because the mean of its divisors is an integer number (561210156079).

Almost surely, 2^{1122420312157} is an apocalyptic number.

It is an amenable number.

1122420312157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122420312157 is an equidigital number, since it uses as much as digits as its factorization.

1122420312157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 1122420312157 its reverse (7512130242211), we get a palindrome (8634550554368).

The spelling of 1122420312157 in words is "one trillion, one hundred twenty-two billion, four hundred twenty million, three hundred twelve thousand, one hundred fifty-seven".