1321022011210 has 64 divisors (see below), whose sum is σ = 2749294846080. Its totient is φ = 451670149120.

The previous prime is 1321022011201. The next prime is 1321022011219. The reversal of 1321022011210 is 121102201231.

It is an interprime number because it is at equal distance from previous prime (1321022011201) and next prime (1321022011219).

It is not an unprimeable number, because it can be changed into a prime (1321022011219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1558902 + ... + 2252158.

It is an arithmetic number, because the mean of its divisors is an integer number (42957731970).

Almost surely, 2^{1321022011210} is an apocalyptic number.

1321022011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321022011210 is an abundant number, since it is smaller than the sum of its proper divisors (1428272834870).

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

1321022011210 is a wasteful number, since it uses less digits than its factorization.

1321022011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694311.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1321022011210 its reverse (121102201231), we get a palindrome (1442124212441).

The spelling of 1321022011210 in words is "one trillion, three hundred twenty-one billion, twenty-two million, eleven thousand, two hundred ten".