1221434303235 has 16 divisors (see below), whose sum is σ = 1954312531200. Its totient is φ = 651425746400.

The previous prime is 1221434303227. The next prime is 1221434303263. The reversal of 1221434303235 is 5323034341221.

It is not a de Polignac number, because 1221434303235 - 2³ = 1221434303227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221434303196 and 1221434303205.

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, 1738066 + ... + 2337464.

It is an arithmetic number, because the mean of its divisors is an integer number (122144533200).

Almost surely, 2^{1221434303235} is an apocalyptic number.

1221434303235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1221434303235 is a deficient number, since it is larger than the sum of its proper divisors (732878227965).

1221434303235 is a wasteful number, since it uses less digits than its factorization.

1221434303235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735258.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 1221434303235 its reverse (5323034341221), we get a palindrome (6544468644456).

The spelling of 1221434303235 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-four million, three hundred three thousand, two hundred thirty-five".