1221404114 has 16 divisors (see below), whose sum is σ = 2150426688. Its totient is φ = 509311152.

The previous prime is 1221404111. The next prime is 1221404131. The reversal of 1221404114 is 4114041221.

It is a super-2 number, since 2×1221404114² = 2983656019392249992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221404111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178444 + ... + 1179479.

It is an arithmetic number, because the mean of its divisors is an integer number (134401668).

Almost surely, 2^1221404114 is an apocalyptic number.

1221404114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221404114 is a deficient number, since it is larger than the sum of its proper divisors (929022574).

1221404114 is a wasteful number, since it uses less digits than its factorization.

1221404114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357969.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1221404114 is about 34948.5924466208. The cubic root of 1221404114 is about 1068.9395012787.

Adding to 1221404114 its reverse (4114041221), we get a palindrome (5335445335).

The spelling of 1221404114 in words is "one billion, two hundred twenty-one million, four hundred four thousand, one hundred fourteen".