20040222113477 has 2 divisors, whose sum is σ = 20040222113478. Its totient is φ = 20040222113476.

The previous prime is 20040222113399. The next prime is 20040222113489. The reversal of 20040222113477 is 77431122204002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12450164053441 + 7590058060036 = 3528479^2 + 2755006^2 .

It is a cyclic number.

It is not a de Polignac number, because 20040222113477 - 2³² = 20035927146181 is a prime.

It is a super-2 number, since 2×20040222113477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20040222113677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020111056738 + 10020111056739.

It is an arithmetic number, because the mean of its divisors is an integer number (10020111056739).

Almost surely, 2^{20040222113477} is an apocalyptic number.

It is an amenable number.

20040222113477 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040222113477 is an equidigital number, since it uses as much as digits as its factorization.

20040222113477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

Adding to 20040222113477 its reverse (77431122204002), we get a palindrome (97471344317479).

The spelling of 20040222113477 in words is "twenty trillion, forty billion, two hundred twenty-two million, one hundred thirteen thousand, four hundred seventy-seven".