1321211030 has 16 divisors (see below), whose sum is σ = 2423052144. Its totient is φ = 518512800.

The previous prime is 1321211027. The next prime is 1321211071. The reversal of 1321211030 is 301121231.

It is a junction number, because it is equal to n+sod(n) for n = 1321210996 and 1321211014.

It is a congruent number.

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, 1245896 + ... + 1246955.

It is an arithmetic number, because the mean of its divisors is an integer number (151440759).

Almost surely, 2^1321211030 is an apocalyptic number.

1321211030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321211030 is a deficient number, since it is larger than the sum of its proper divisors (1101841114).

1321211030 is a wasteful number, since it uses less digits than its factorization.

1321211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492911.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1321211030 is about 36348.4666801779. The cubic root of 1321211030 is about 1097.2966758908.

Adding to 1321211030 its reverse (301121231), we get a palindrome (1622332261).

It can be divided in two parts, 13212 and 11030, that added together give a palindrome (24242).

The spelling of 1321211030 in words is "one billion, three hundred twenty-one million, two hundred eleven thousand, thirty".