1267988122 has 4 divisors (see below), whose sum is σ = 1901982186. Its totient is φ = 633994060.

The previous prime is 1267988101. The next prime is 1267988143. The reversal of 1267988122 is 2218897621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1267988101) and next prime (1267988143).

It can be written as a sum of positive squares in only one way, i.e., 1038192841 + 229795281 = 32221^2 + 15159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316997029 + ... + 316997032.

Almost surely, 2^1267988122 is an apocalyptic number.

1267988122 is a deficient number, since it is larger than the sum of its proper divisors (633994064).

1267988122 is an equidigital number, since it uses as much as digits as its factorization.

1267988122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633994063.

The product of its digits is 193536, while the sum is 46.

The square root of 1267988122 is about 35608.8208454029. The cubic root of 1267988122 is about 1082.3599861579.

The spelling of 1267988122 in words is "one billion, two hundred sixty-seven million, nine hundred eighty-eight thousand, one hundred twenty-two".