1221441400110 has 64 divisors (see below), whose sum is σ = 3008443875840. Its totient is φ = 317267556480.

The previous prime is 1221441400093. The next prime is 1221441400111. The reversal of 1221441400110 is 110041441221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221441400111) 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, 3051580 + ... + 3428559.

It is an arithmetic number, because the mean of its divisors is an integer number (47006935560).

Almost surely, 2^{1221441400110} is an apocalyptic number.

1221441400110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221441400110 is an abundant number, since it is smaller than the sum of its proper divisors (1787002475730).

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

1221441400110 is a wasteful number, since it uses less digits than its factorization.

1221441400110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480313.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 1221441400110 its reverse (110041441221), we get a palindrome (1331482841331).

The spelling of 1221441400110 in words is "one trillion, two hundred twenty-one billion, four hundred forty-one million, four hundred thousand, one hundred ten".