1220100121112 has 32 divisors (see below), whose sum is σ = 2408588179200. Its totient is φ = 577823162400.

The previous prime is 1220100121109. The next prime is 1220100121147. The reversal of 1220100121112 is 2111210010221.

It is a congruent number.

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, 83564 + ... + 1564347.

It is an arithmetic number, because the mean of its divisors is an integer number (75268380600).

Almost surely, 2^{1220100121112} is an apocalyptic number.

It is an amenable number.

1220100121112 is a deficient number, since it is larger than the sum of its proper divisors (1188488058088).

1220100121112 is a wasteful number, since it uses less digits than its factorization.

1220100121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652807 (or 1652803 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220100121112 its reverse (2111210010221), we get a palindrome (3331310131333).

The spelling of 1220100121112 in words is "one trillion, two hundred twenty billion, one hundred million, one hundred twenty-one thousand, one hundred twelve".