1022010021181 has 2 divisors, whose sum is σ = 1022010021182. Its totient is φ = 1022010021180.

The previous prime is 1022010021161. The next prime is 1022010021203. The reversal of 1022010021181 is 1811200102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825281402500 + 196728618681 = 908450^2 + 443541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022010021181 - 2²¹ = 1022007924029 is a prime.

It is a super-2 number, since 2×1022010021181² (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 (1022010021161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511005010590 + 511005010591.

It is an arithmetic number, because the mean of its divisors is an integer number (511005010591).

Almost surely, 2^{1022010021181} is an apocalyptic number.

It is an amenable number.

1022010021181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022010021181 is an equidigital number, since it uses as much as digits as its factorization.

1022010021181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1022010021181 its reverse (1811200102201), we get a palindrome (2833210123382).

The spelling of 1022010021181 in words is "one trillion, twenty-two billion, ten million, twenty-one thousand, one hundred eighty-one".