1022121977 has 2 divisors, whose sum is σ = 1022121978. Its totient is φ = 1022121976.

The previous prime is 1022121941. The next prime is 1022122021. The reversal of 1022121977 is 7791212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988725136 + 33396841 = 31444^2 + 5779^2 .

It is an emirp because it is prime and its reverse (7791212201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1022121977 - 2⁶ = 1022121913 is a prime.

It is a super-3 number, since 3×1022121977³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1022124977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511060988 + 511060989.

It is an arithmetic number, because the mean of its divisors is an integer number (511060989).

Almost surely, 2^1022121977 is an apocalyptic number.

It is an amenable number.

1022121977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022121977 is an equidigital number, since it uses as much as digits as its factorization.

1022121977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 1022121977 is about 31970.6424239489. The cubic root of 1022121977 is about 1007.3202751493.

The spelling of 1022121977 in words is "one billion, twenty-two million, one hundred twenty-one thousand, nine hundred seventy-seven".