1220003110100 has 36 divisors (see below), whose sum is σ = 2670835151964. Its totient is φ = 483682644480.

The previous prime is 1220003110061. The next prime is 1220003110141. The reversal of 1220003110100 is 10113000221.

It can be written as a sum of positive squares in 6 ways, for example, as 138440549776 + 1081562560324 = 372076^2 + 1039982^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53971139 + ... + 53993738.

Almost surely, 2^{1220003110100} is an apocalyptic number.

1220003110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220003110100 is an abundant number, since it is smaller than the sum of its proper divisors (1450832041864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220003110100 is a wasteful number, since it uses less digits than its factorization.

1220003110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107965004 (or 107964997 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1220003110100 its reverse (10113000221), we get a palindrome (1230116110321).

The spelling of 1220003110100 in words is "one trillion, two hundred twenty billion, three million, one hundred ten thousand, one hundred".