1220200220122 has 16 divisors (see below), whose sum is σ = 1971230443560. Its totient is φ = 563129966592.

The previous prime is 1220200220101. The next prime is 1220200220143. The reversal of 1220200220122 is 2210220020221.

It is an interprime number because it is at equal distance from previous prime (1220200220101) and next prime (1220200220143).

It can be written as a sum of positive squares in 4 ways, for example, as 1121182381881 + 99017838241 = 1058859^2 + 314671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220200220096 and 1220200220105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259463 + ... + 2006650.

Almost surely, 2^{1220200220122} is an apocalyptic number.

1220200220122 is a deficient number, since it is larger than the sum of its proper divisors (751030223438).

1220200220122 is a wasteful number, since it uses less digits than its factorization.

1220200220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280497.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220200220122 its reverse (2210220020221), we get a palindrome (3430420240343).

The spelling of 1220200220122 in words is "one trillion, two hundred twenty billion, two hundred million, two hundred twenty thousand, one hundred twenty-two".