1221342101430 has 64 divisors (see below), whose sum is σ = 3212035319808. Its totient is φ = 294755189760.

The previous prime is 1221342101423. The next prime is 1221342101437. The reversal of 1221342101430 is 341012431221.

It is an interprime number because it is at equal distance from previous prime (1221342101423) and next prime (1221342101437).

It is a self number, because there is not a number n which added to its sum of digits gives 1221342101430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221342101437) 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, 8224699 + ... + 8371878.

It is an arithmetic number, because the mean of its divisors is an integer number (50188051872).

Almost surely, 2^{1221342101430} is an apocalyptic number.

1221342101430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221342101430 is an abundant number, since it is smaller than the sum of its proper divisors (1990693218378).

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

1221342101430 is a wasteful number, since it uses less digits than its factorization.

1221342101430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596821.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1221342101430 its reverse (341012431221), we get a palindrome (1562354532651).

The spelling of 1221342101430 in words is "one trillion, two hundred twenty-one billion, three hundred forty-two million, one hundred one thousand, four hundred thirty".