1220100212001 has 16 divisors (see below), whose sum is σ = 1808175960000. Its totient is φ = 725502697920.

The previous prime is 1220100211991. The next prime is 1220100212057. The reversal of 1220100212001 is 1002120010221.

It is not a de Polignac number, because 1220100212001 - 2⁶ = 1220100211937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220100212701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348797626 + ... + 348801123.

It is an arithmetic number, because the mean of its divisors is an integer number (113010997500).

Almost surely, 2^{1220100212001} is an apocalyptic number.

1220100212001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220100212001 is a deficient number, since it is larger than the sum of its proper divisors (588075747999).

1220100212001 is a wasteful number, since it uses less digits than its factorization.

1220100212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697598816.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220100212001 its reverse (1002120010221), we get a palindrome (2222220222222).

The spelling of 1220100212001 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred twelve thousand, one".