1221030102 has 32 divisors (see below), whose sum is σ = 2510605440. Its totient is φ = 395657280.

The previous prime is 1221030073. The next prime is 1221030113. The reversal of 1221030102 is 2010301221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60849 + ... + 78387.

It is an arithmetic number, because the mean of its divisors is an integer number (78456420).

Almost surely, 2^1221030102 is an apocalyptic number.

1221030102 is an abundant number, since it is smaller than the sum of its proper divisors (1289575338).

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

1221030102 is a wasteful number, since it uses less digits than its factorization.

1221030102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17868.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1221030102 is about 34943.2411490405. The cubic root of 1221030102 is about 1068.8303817796.

Adding to 1221030102 its reverse (2010301221), we get a palindrome (3231331323).

The spelling of 1221030102 in words is "one billion, two hundred twenty-one million, thirty thousand, one hundred two".