1221100020014 has 64 divisors (see below), whose sum is σ = 2434545331200. Its totient is φ = 446333234688.

The previous prime is 1221100020013. The next prime is 1221100020029. The reversal of 1221100020014 is 4100200011221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221100020013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5766329 + ... + 5974340.

It is an arithmetic number, because the mean of its divisors is an integer number (38039770800).

Almost surely, 2^{1221100020014} is an apocalyptic number.

1221100020014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221100020014 is a deficient number, since it is larger than the sum of its proper divisors (1213445311186).

1221100020014 is a wasteful number, since it uses less digits than its factorization.

1221100020014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11740737.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221100020014 its reverse (4100200011221), we get a palindrome (5321300031235).

The spelling of 1221100020014 in words is "one trillion, two hundred twenty-one billion, one hundred million, twenty thousand, fourteen".