1220020020099 has 6 divisors (see below), whose sum is σ = 1762251140156. Its totient is φ = 813346680060.

The previous prime is 1220020020067. The next prime is 1220020020119. The reversal of 1220020020099 is 9900200200221.

It is not a de Polignac number, because 1220020020099 - 2⁵ = 1220020020067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220020020799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67778889997 + ... + 67778890014.

Almost surely, 2^{1220020020099} is an apocalyptic number.

1220020020099 is a deficient number, since it is larger than the sum of its proper divisors (542231120057).

1220020020099 is a wasteful number, since it uses less digits than its factorization.

1220020020099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135557780017 (or 135557780014 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 1220020020099 in words is "one trillion, two hundred twenty billion, twenty million, twenty thousand, ninety-nine".