1221414102 has 48 divisors (see below), whose sum is σ = 2724022080. Its totient is φ = 395366400.

The previous prime is 1221414101. The next prime is 1221414143. The reversal of 1221414102 is 2014141221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221414101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79702 + ... + 93782.

It is an arithmetic number, because the mean of its divisors is an integer number (56750460).

Almost surely, 2^1221414102 is an apocalyptic number.

1221414102 is an abundant number, since it is smaller than the sum of its proper divisors (1502607978).

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

1221414102 is a wasteful number, since it uses less digits than its factorization.

1221414102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229 (or 14226 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1221414102 is about 34948.7353419262. The cubic root of 1221414102 is about 1068.9424150123.

Adding to 1221414102 its reverse (2014141221), we get a palindrome (3235555323).

The spelling of 1221414102 in words is "one billion, two hundred twenty-one million, four hundred fourteen thousand, one hundred two".