1221431303410 has 16 divisors (see below), whose sum is σ = 2198599554456. Its totient is φ = 488567363968.

The previous prime is 1221431303333. The next prime is 1221431303429. The reversal of 1221431303410 is 143031341221.

It can be written as a sum of positive squares in 4 ways, for example, as 1060605440449 + 160825862961 = 1029857^2 + 401031^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436332 + ... + 1622728.

Almost surely, 2^{1221431303410} is an apocalyptic number.

1221431303410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221431303410 is a deficient number, since it is larger than the sum of its proper divisors (977168251046).

1221431303410 is a wasteful number, since it uses less digits than its factorization.

1221431303410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289357.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1221431303410 its reverse (143031341221), we get a palindrome (1364462644631).

The spelling of 1221431303410 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-one million, three hundred three thousand, four hundred ten".