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10220200122221 = 14978778707877

10220200122221 has 8 divisors (see below), whose sum is σ = 10290099432600. Its totient is φ = 10150318243648.

The previous prime is 10220200122217. The next prime is 10220200122227. The reversal of 10220200122221 is 12222100202201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 212531142121 + 10007668980100 = 461011^2 + 3163490^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10220200122221 - 22 = 10220200122217 is a prime.

It is a super-2 number, since 2×102202001222212 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10220200122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220200122227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3180266 + ... + 5527611.

It is an arithmetic number, because the mean of its divisors is an integer number (1286262429075).

Almost surely, 210220200122221 is an apocalyptic number.

It is an amenable number.

10220200122221 is a deficient number, since it is larger than the sum of its proper divisors (69899310379).

10220200122221 is an equidigital number, since it uses as much as digits as its factorization.

10220200122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715903.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10220200122221 its reverse (12222100202201), we get a palindrome (22442300324422).

The spelling of 10220200122221 in words is "ten trillion, two hundred twenty billion, two hundred million, one hundred twenty-two thousand, two hundred twenty-one".

Divisors: 1 149 7877 1173673 8707877 1297473673 68591947129 10220200122221