1227076021 has 2 divisors, whose sum is σ = 1227076022. Its totient is φ = 1227076020.

The previous prime is 1227075991. The next prime is 1227076033. The reversal of 1227076021 is 1206707221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1208327121 + 18748900 = 34761^2 + 4330^2 .

It is an emirp because it is prime and its reverse (1206707221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1227076021 - 2¹¹ = 1227073973 is a prime.

It is a super-2 number, since 2×1227076021² = 3011431122626384882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1227076091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613538010 + 613538011.

It is an arithmetic number, because the mean of its divisors is an integer number (613538011).

Almost surely, 2^1227076021 is an apocalyptic number.

It is an amenable number.

1227076021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227076021 is an equidigital number, since it uses as much as digits as its factorization.

1227076021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1227076021 is about 35029.6448882943. The cubic root of 1227076021 is about 1070.5915792942.

The spelling of 1227076021 in words is "one billion, two hundred twenty-seven million, seventy-six thousand, twenty-one".