1023202020077 has 2 divisors, whose sum is σ = 1023202020078. Its totient is φ = 1023202020076.

The previous prime is 1023202020067. The next prime is 1023202020143. The reversal of 1023202020077 is 7700202023201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734138798761 + 289063221316 = 856819^2 + 537646^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023202020077 - 2¹⁴ = 1023202003693 is a prime.

It is a super-2 number, since 2×1023202020077² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023202020067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511601010038 + 511601010039.

It is an arithmetic number, because the mean of its divisors is an integer number (511601010039).

Almost surely, 2^{1023202020077} is an apocalyptic number.

It is an amenable number.

1023202020077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023202020077 is an equidigital number, since it uses as much as digits as its factorization.

1023202020077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

Adding to 1023202020077 its reverse (7700202023201), we get a palindrome (8723404043278).

The spelling of 1023202020077 in words is "one trillion, twenty-three billion, two hundred two million, twenty thousand, seventy-seven".