1201021427 has 2 divisors, whose sum is σ = 1201021428. Its totient is φ = 1201021426.

The previous prime is 1201021421. The next prime is 1201021453. The reversal of 1201021427 is 7241201021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201021427 - 2⁴ = 1201021411 is a prime.

It is a super-2 number, since 2×1201021427² = 2884904936226232658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201021399 and 1201021408.

It is not a weakly prime, because it can be changed into another prime (1201021421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510713 + 600510714.

It is an arithmetic number, because the mean of its divisors is an integer number (600510714).

Almost surely, 2^1201021427 is an apocalyptic number.

1201021427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201021427 is an equidigital number, since it uses as much as digits as its factorization.

1201021427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1201021427 is about 34655.7560442706. The cubic root of 1201021427 is about 1062.9599914970.

Adding to 1201021427 its reverse (7241201021), we get a palindrome (8442222448).

The spelling of 1201021427 in words is "one billion, two hundred one million, twenty-one thousand, four hundred twenty-seven".