1020002022157 has 2 divisors, whose sum is σ = 1020002022158. Its totient is φ = 1020002022156.

The previous prime is 1020002022119. The next prime is 1020002022173. The reversal of 1020002022157 is 7512202000201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578825769636 + 441176252521 = 760806^2 + 664211^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020002022157 - 2³¹ = 1017854538509 is a prime.

It is a super-3 number, since 3×1020002022157³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002022187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001011078 + 510001011079.

It is an arithmetic number, because the mean of its divisors is an integer number (510001011079).

Almost surely, 2^{1020002022157} is an apocalyptic number.

It is an amenable number.

1020002022157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002022157 is an equidigital number, since it uses as much as digits as its factorization.

1020002022157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 1020002022157 its reverse (7512202000201), we get a palindrome (8532204022358).

The spelling of 1020002022157 in words is "one trillion, twenty billion, two million, twenty-two thousand, one hundred fifty-seven".